static void opencl_detect()
{
int i;
nDevs = clDevicesNum();
if (nDevs < 0) {
applog(LOG_ERR, "clDevicesNum returned error, no GPUs usable");
nDevs = 0;
}
if (!nDevs)
return;
for (i = 0; i < nDevs; ++i) {
struct cgpu_info *cgpu;
cgpu = &gpus[i];
cgpu->deven = DEV_ENABLED;
cgpu->api = &opencl_api;
cgpu->device_id = i;
cgpu->threads = opt_g_threads;
cgpu->virtual_gpu = i;
add_cgpu(cgpu);
}
if (!opt_noadl)
init_adl(nDevs);
}
static void opencl_detect(bool hotplug)
{
int i;
if (opt_nogpu || hotplug)
return;
nDevs = clDevicesNum();
if (nDevs < 0) {
applog(LOG_ERR, "clDevicesNum returned error, no GPUs usable");
nDevs = 0;
}
if (!nDevs)
return;
/* If opt_g_threads is not set, use default 1 thread on scrypt and
* 2 for regular mining */
if (opt_g_threads == -1) {
if (opt_scrypt)
opt_g_threads = 1;
else
opt_g_threads = 2;
}
if (opt_scrypt)
opencl_drv.max_diff = 65536;
for (i = 0; i < nDevs; ++i) {
struct cgpu_info *cgpu;
cgpu = &gpus[i];
cgpu->deven = DEV_ENABLED;
cgpu->drv = &opencl_drv;
cgpu->device_id = i;
#ifndef HAVE_ADL
cgpu->threads = opt_g_threads;
#else
if (cgpu->threads < 1)
cgpu->threads = 1;
#endif
cgpu->virtual_gpu = i;
add_cgpu(cgpu);
}
if (!opt_noadl)
init_adl(nDevs);
}
static void opencl_detect(void)
{
int i;
nDevs = clDevicesNum();
if (nDevs < 0) {
applog(LOG_ERR, "clDevicesNum returned error, no GPUs usable");
nDevs = 0;
}
if (!nDevs)
return;
/* If opt_g_threads is not set, use default 1 thread */
if (opt_g_threads == -1)
opt_g_threads = 1;
opencl_drv.max_diff = 65536;
for (i = 0; i < nDevs; ++i) {
struct cgpu_info *cgpu;
cgpu = &gpus[i];
cgpu->deven = DEV_ENABLED;
cgpu->drv = &opencl_drv;
cgpu->thr = NULL;
cgpu->device_id = i;
#ifndef HAVE_ADL
cgpu->threads = opt_g_threads;
#else
if (cgpu->threads < 1)
cgpu->threads = 1;
#endif
cgpu->virtual_gpu = i;
cgpu->algorithm = default_profile.algorithm;
add_cgpu(cgpu);
}
if (!opt_noadl)
init_adl(nDevs);
}
/* We have only one thread that ever re-initialises GPUs, thus if any GPU
* init command fails due to a completely wedged GPU, the thread will never
* return, unable to harm other GPUs. If it does return, it means we only had
* a soft failure and then the reinit_gpu thread is ready to tackle another
* GPU */
void *reinit_gpu(void *userdata)
{
struct thr_info *mythr = userdata;
struct cgpu_info *cgpu;
struct thr_info *thr;
struct timeval now;
char name[256];
int thr_id;
int gpu;
pthread_detach(pthread_self());
select_cgpu:
cgpu = tq_pop(mythr->q, NULL);
if (!cgpu)
goto out;
if (clDevicesNum() != nDevs) {
applog(LOG_WARNING, "Hardware not reporting same number of active devices, will not attempt to restart GPU");
goto out;
}
gpu = cgpu->device_id;
for (thr_id = 0; thr_id < mining_threads; ++thr_id) {
thr = &thr_info[thr_id];
cgpu = thr->cgpu;
if (cgpu->api != &opencl_api)
continue;
if (dev_from_id(thr_id) != gpu)
continue;
thr = &thr_info[thr_id];
if (!thr) {
applog(LOG_WARNING, "No reference to thread %d exists", thr_id);
continue;
}
thr->rolling = thr->cgpu->rolling = 0;
/* Reports the last time we tried to revive a sick GPU */
gettimeofday(&thr->sick, NULL);
if (!pthread_cancel(thr->pth)) {
applog(LOG_WARNING, "Thread %d still exists, killing it off", thr_id);
} else
applog(LOG_WARNING, "Thread %d no longer exists", thr_id);
}
for (thr_id = 0; thr_id < mining_threads; ++thr_id) {
int virtual_gpu;
thr = &thr_info[thr_id];
cgpu = thr->cgpu;
if (cgpu->api != &opencl_api)
continue;
if (dev_from_id(thr_id) != gpu)
continue;
virtual_gpu = cgpu->virtual_gpu;
/* Lose this ram cause we may get stuck here! */
//tq_freeze(thr->q);
thr->q = tq_new();
if (!thr->q)
quit(1, "Failed to tq_new in reinit_gpu");
/* Lose this ram cause we may dereference in the dying thread! */
//free(clState);
applog(LOG_INFO, "Reinit GPU thread %d", thr_id);
clStates[thr_id] = initCl(virtual_gpu, name, sizeof(name));
if (!clStates[thr_id]) {
applog(LOG_ERR, "Failed to reinit GPU thread %d", thr_id);
goto select_cgpu;
}
applog(LOG_INFO, "initCl() finished. Found %s", name);
if (unlikely(thr_info_create(thr, NULL, miner_thread, thr))) {
applog(LOG_ERR, "thread %d create failed", thr_id);
return NULL;
}
applog(LOG_WARNING, "Thread %d restarted", thr_id);
}
gettimeofday(&now, NULL);
get_datestamp(cgpu->init, &now);
for (thr_id = 0; thr_id < mining_threads; ++thr_id) {
thr = &thr_info[thr_id];
cgpu = thr->cgpu;
if (cgpu->api != &opencl_api)
continue;
if (dev_from_id(thr_id) != gpu)
continue;
tq_push(thr->q, &ping);
}
goto select_cgpu;
out:
return NULL;
}
_clState *initCl(int platform_id, unsigned int gpu, char *name, size_t nameSize)
{
_clState *clState = (_clState *)calloc(1, sizeof(_clState));
bool patchbfi = false, prog_built = false;
struct cgpu_info *cgpu = &gpus[gpu];
cl_platform_id platform = NULL;
char pbuff[256], vbuff[255];
cl_platform_id* platforms;
cl_uint preferred_vwidth;
cl_device_id *devices;
cl_uint numPlatforms;
cl_uint numDevices;
cl_int status;
if (opt_platform_id < 0) {
clDevicesNum();
}
if (opt_platform_id < 0) {
applog(LOG_ERR, "Unable to find a OpenCL platform to run on");
return NULL;
}
status = clGetPlatformIDs(0, NULL, &numPlatforms);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error %d: Getting Platforms. (clGetPlatformsIDs)", status);
return NULL;
}
platforms = (cl_platform_id *)alloca(numPlatforms*sizeof(cl_platform_id));
status = clGetPlatformIDs(numPlatforms, platforms, NULL);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error %d: Getting Platform Ids. (clGetPlatformsIDs)", status);
return NULL;
}
if (platform_id >= (int)numPlatforms) {
applog(LOG_ERR, "Specified platform that does not exist");
return NULL;
}
status = clGetPlatformInfo(platforms[platform_id], CL_PLATFORM_VENDOR, sizeof(pbuff), pbuff, NULL);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error %d: Getting Platform Info. (clGetPlatformInfo)", status);
return NULL;
}
platform = platforms[platform_id];
if (platform == NULL) {
perror("NULL platform found!\n");
return NULL;
}
applog(LOG_INFO, "CL Platform vendor: %s", pbuff);
status = clGetPlatformInfo(platform, CL_PLATFORM_NAME, sizeof(pbuff), pbuff, NULL);
if (status == CL_SUCCESS)
applog(LOG_INFO, "CL Platform name: %s", pbuff);
status = clGetPlatformInfo(platform, CL_PLATFORM_VERSION, sizeof(vbuff), vbuff, NULL);
if (status == CL_SUCCESS)
applog(LOG_INFO, "CL Platform version: %s", vbuff);
status = clGetDeviceIDs(platform, CL_DEVICE_TYPE_GPU, 0, NULL, &numDevices);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error %d: Getting Device IDs (num)", status);
return NULL;
}
if (numDevices > 0 ) {
devices = (cl_device_id *)malloc(numDevices*sizeof(cl_device_id));
/* Now, get the device list data */
status = clGetDeviceIDs(platform, CL_DEVICE_TYPE_GPU, numDevices, devices, NULL);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error %d: Getting Device IDs (list)", status);
return NULL;
}
applog(LOG_INFO, "List of devices:");
unsigned int i;
for (i = 0; i < numDevices; i++) {
status = clGetDeviceInfo(devices[i], CL_DEVICE_NAME, sizeof(pbuff), pbuff, NULL);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error %d: Getting Device Info", status);
return NULL;
}
applog(LOG_INFO, "\t%i\t%s", i, pbuff);
}
if (cgpu->device_id < numDevices) {
status = clGetDeviceInfo(devices[cgpu->device_id], CL_DEVICE_NAME, sizeof(pbuff), pbuff, NULL);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error %d: Getting Device Info", status);
return NULL;
}
applog(LOG_INFO, "Selected %i: %s", cgpu->device_id, pbuff);
strncpy(name, pbuff, nameSize);
} else {
applog(LOG_ERR, "Invalid GPU %d %d", cgpu->platform_id, cgpu->device_id);
return NULL;
}
} else return NULL;
cl_context_properties cps[3] = { CL_CONTEXT_PLATFORM, (cl_context_properties)platform, 0 };
clState->context = clCreateContextFromType(cps, CL_DEVICE_TYPE_GPU, NULL, NULL, &status);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error %d: Creating Context. (clCreateContextFromType)", status);
return NULL;
}
/////////////////////////////////////////////////////////////////
// Create an OpenCL command queue
/////////////////////////////////////////////////////////////////
clState->commandQueue = clCreateCommandQueue(clState->context, devices[cgpu->device_id],
CL_QUEUE_OUT_OF_ORDER_EXEC_MODE_ENABLE, &status);
if (status != CL_SUCCESS) /* Try again without OOE enable */
clState->commandQueue = clCreateCommandQueue(clState->context, devices[cgpu->device_id], 0 , &status);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error %d: Creating Command Queue. (clCreateCommandQueue)", status);
return NULL;
}
/* Check for BFI INT support. Hopefully people don't mix devices with
* and without it! */
char * extensions = (char *)malloc(1024);
const char * camo = "cl_amd_media_ops";
char *find;
status = clGetDeviceInfo(devices[cgpu->device_id], CL_DEVICE_EXTENSIONS, 1024, (void *)extensions, NULL);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error %d: Failed to clGetDeviceInfo when trying to get CL_DEVICE_EXTENSIONS", status);
return NULL;
}
find = strstr(extensions, camo);
if (find)
clState->hasBitAlign = true;
/* Check for OpenCL >= 1.0 support, needed for global offset parameter usage. */
char * devoclver = (char *)malloc(1024);
const char * ocl10 = "OpenCL 1.0";
const char * ocl11 = "OpenCL 1.1";
status = clGetDeviceInfo(devices[cgpu->device_id], CL_DEVICE_VERSION, 1024, (void *)devoclver, NULL);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error %d: Failed to clGetDeviceInfo when trying to get CL_DEVICE_VERSION", status);
return NULL;
}
find = strstr(devoclver, ocl10);
if (!find) {
clState->hasOpenCL11plus = true;
find = strstr(devoclver, ocl11);
if (!find)
clState->hasOpenCL12plus = true;
}
status = clGetDeviceInfo(devices[cgpu->device_id], CL_DEVICE_PREFERRED_VECTOR_WIDTH_INT, sizeof(cl_uint), (void *)&preferred_vwidth, NULL);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error %d: Failed to clGetDeviceInfo when trying to get CL_DEVICE_PREFERRED_VECTOR_WIDTH_INT", status);
return NULL;
}
applog(LOG_DEBUG, "Preferred vector width reported %d", preferred_vwidth);
status = clGetDeviceInfo(devices[cgpu->device_id], CL_DEVICE_MAX_WORK_GROUP_SIZE, sizeof(size_t), (void *)&clState->max_work_size, NULL);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error %d: Failed to clGetDeviceInfo when trying to get CL_DEVICE_MAX_WORK_GROUP_SIZE", status);
return NULL;
}
applog(LOG_DEBUG, "Max work group size reported %d", (int)(clState->max_work_size));
size_t compute_units = 0;
status = clGetDeviceInfo(devices[cgpu->device_id], CL_DEVICE_MAX_COMPUTE_UNITS, sizeof(size_t), (void *)&compute_units, NULL);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error %d: Failed to clGetDeviceInfo when trying to get CL_DEVICE_MAX_COMPUTE_UNITS", status);
return NULL;
}
// AMD architechture got 64 compute shaders per compute unit.
// Source: http://www.amd.com/us/Documents/GCN_Architecture_whitepaper.pdf
clState->compute_shaders = compute_units * 64;
applog(LOG_DEBUG, "Max shaders calculated %d", (int)(clState->compute_shaders));
status = clGetDeviceInfo(devices[cgpu->device_id], CL_DEVICE_MAX_MEM_ALLOC_SIZE , sizeof(cl_ulong), (void *)&cgpu->max_alloc, NULL);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error %d: Failed to clGetDeviceInfo when trying to get CL_DEVICE_MAX_MEM_ALLOC_SIZE", status);
return NULL;
}
applog(LOG_DEBUG, "Max mem alloc size is %lu", (long unsigned int)(cgpu->max_alloc));
/* Create binary filename based on parameters passed to opencl
* compiler to ensure we only load a binary that matches what would
* have otherwise created. The filename is:
* name + kernelname +/- g(offset) + v + vectors + w + work_size + l + sizeof(long) + .bin
* For scrypt the filename is:
* name + kernelname + g + lg + lookup_gap + tc + thread_concurrency + w + work_size + l + sizeof(long) + .bin
*/
char binaryfilename[255];
char filename[255];
char strbuf[32];
if (cgpu->kernelname == NULL) {
applog(LOG_INFO, "No kernel specified, defaulting to ckolivas");
cgpu->kernelname = strdup("ckolivas");
}
sprintf(strbuf, "%s.cl", cgpu->kernelname);
strcpy(filename, strbuf);
strcpy(binaryfilename, cgpu->kernelname);
if ((strcmp(cgpu->kernelname, "zuikkis") == 0) && (cgpu->lookup_gap != 2)) {
applog(LOG_WARNING, "Kernel zuikkis only supports lookup-gap = 2, forcing.");
cgpu->lookup_gap = 2;
}
/* For some reason 2 vectors is still better even if the card says
* otherwise, and many cards lie about their max so use 256 as max
* unless explicitly set on the command line. Tahiti prefers 1 */
if (strstr(name, "Tahiti"))
preferred_vwidth = 1;
else if (preferred_vwidth > 2)
preferred_vwidth = 2;
/* All available kernels only support vector 1 */
cgpu->vwidth = 1;
/* Vectors are hard-set to 1 above. */
if (likely(cgpu->vwidth))
clState->vwidth = cgpu->vwidth;
else {
clState->vwidth = preferred_vwidth;
cgpu->vwidth = preferred_vwidth;
}
clState->goffset = true;
if (cgpu->work_size && cgpu->work_size <= clState->max_work_size)
clState->wsize = cgpu->work_size;
else
clState->wsize = 256;
if (!cgpu->opt_lg) {
applog(LOG_DEBUG, "GPU %d: selecting lookup gap of 2", cgpu->virtual_gpu);
cgpu->lookup_gap = 2;
} else
cgpu->lookup_gap = cgpu->opt_lg;
if (!cgpu->opt_tc) {
unsigned int sixtyfours;
sixtyfours = cgpu->max_alloc / 131072 / 64 / (algorithm->n/1024) - 1;
cgpu->thread_concurrency = sixtyfours * 64;
if (cgpu->shaders && cgpu->thread_concurrency > cgpu->shaders) {
cgpu->thread_concurrency -= cgpu->thread_concurrency % cgpu->shaders;
if (cgpu->thread_concurrency > cgpu->shaders * 5)
cgpu->thread_concurrency = cgpu->shaders * 5;
}
applog(LOG_DEBUG, "GPU %d: selecting thread concurrency of %d", cgpu->virtual_gpu, (int)(cgpu->thread_concurrency));
} else
cgpu->thread_concurrency = cgpu->opt_tc;
FILE *binaryfile;
size_t *binary_sizes;
char **binaries;
int pl;
char *source = file_contents(filename, &pl);
size_t sourceSize[] = {(size_t)pl};
cl_uint slot, cpnd;
slot = cpnd = 0;
if (!source)
return NULL;
binary_sizes = (size_t *)calloc(sizeof(size_t) * MAX_GPUDEVICES * 4, 1);
if (unlikely(!binary_sizes)) {
applog(LOG_ERR, "Unable to calloc binary_sizes");
return NULL;
}
binaries = (char **)calloc(sizeof(char *) * MAX_GPUDEVICES * 4, 1);
if (unlikely(!binaries)) {
applog(LOG_ERR, "Unable to calloc binaries");
return NULL;
}
strcat(binaryfilename, name);
if (clState->goffset)
strcat(binaryfilename, "g");
sprintf(strbuf, "lg%utc%unf%u", cgpu->lookup_gap, (unsigned int)cgpu->thread_concurrency, algorithm->nfactor);
strcat(binaryfilename, strbuf);
sprintf(strbuf, "w%d", (int)clState->wsize);
strcat(binaryfilename, strbuf);
sprintf(strbuf, "l%d", (int)sizeof(long));
strcat(binaryfilename, strbuf);
strcat(binaryfilename, ".bin");
binaryfile = fopen(binaryfilename, "rb");
if (!binaryfile) {
applog(LOG_DEBUG, "No binary found, generating from source");
} else {
struct stat binary_stat;
if (unlikely(stat(binaryfilename, &binary_stat))) {
applog(LOG_DEBUG, "Unable to stat binary, generating from source");
fclose(binaryfile);
goto build;
}
if (!binary_stat.st_size)
goto build;
binary_sizes[slot] = binary_stat.st_size;
binaries[slot] = (char *)calloc(binary_sizes[slot], 1);
if (unlikely(!binaries[slot])) {
applog(LOG_ERR, "Unable to calloc binaries");
fclose(binaryfile);
return NULL;
}
if (fread(binaries[slot], 1, binary_sizes[slot], binaryfile) != binary_sizes[slot]) {
applog(LOG_ERR, "Unable to fread binaries");
fclose(binaryfile);
free(binaries[slot]);
goto build;
}
clState->program = clCreateProgramWithBinary(clState->context, 1, &devices[cgpu->device_id], &binary_sizes[slot], (const unsigned char **)binaries, &status, NULL);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error %d: Loading Binary into cl_program (clCreateProgramWithBinary)", status);
fclose(binaryfile);
free(binaries[slot]);
goto build;
}
fclose(binaryfile);
applog(LOG_DEBUG, "Loaded binary image %s", binaryfilename);
goto built;
}
/////////////////////////////////////////////////////////////////
// Load CL file, build CL program object, create CL kernel object
/////////////////////////////////////////////////////////////////
build:
applog(LOG_NOTICE, "Building binary %s", binaryfilename);
clState->program = clCreateProgramWithSource(clState->context, 1, (const char **)&source, sourceSize, &status);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error %d: Loading Binary into cl_program (clCreateProgramWithSource)", status);
return NULL;
}
/* create a cl program executable for all the devices specified */
char *CompilerOptions = (char *)calloc(1, 256);
sprintf(CompilerOptions, "-D LOOKUP_GAP=%d -D CONCURRENT_THREADS=%d -D WORKSIZE=%d -D NFACTOR=%d",
cgpu->lookup_gap, (unsigned int)cgpu->thread_concurrency, (int)clState->wsize, (unsigned int)algorithm->nfactor);
applog(LOG_DEBUG, "Setting worksize to %d", (int)(clState->wsize));
if (clState->vwidth > 1)
applog(LOG_DEBUG, "Patched source to suit %d vectors", clState->vwidth);
if (clState->hasBitAlign) {
strcat(CompilerOptions, " -D BITALIGN");
applog(LOG_DEBUG, "cl_amd_media_ops found, setting BITALIGN");
if (!clState->hasOpenCL12plus &&
(strstr(name, "Cedar") ||
strstr(name, "Redwood") ||
strstr(name, "Juniper") ||
strstr(name, "Cypress" ) ||
strstr(name, "Hemlock" ) ||
strstr(name, "Caicos" ) ||
strstr(name, "Turks" ) ||
strstr(name, "Barts" ) ||
strstr(name, "Cayman" ) ||
strstr(name, "Antilles" ) ||
strstr(name, "Wrestler" ) ||
strstr(name, "Zacate" ) ||
strstr(name, "WinterPark" )))
patchbfi = true;
} else
applog(LOG_DEBUG, "cl_amd_media_ops not found, will not set BITALIGN");
if (patchbfi) {
strcat(CompilerOptions, " -D BFI_INT");
applog(LOG_DEBUG, "BFI_INT patch requiring device found, patched source with BFI_INT");
} else
applog(LOG_DEBUG, "BFI_INT patch requiring device not found, will not BFI_INT patch");
if (clState->goffset)
strcat(CompilerOptions, " -D GOFFSET");
if (!clState->hasOpenCL11plus)
strcat(CompilerOptions, " -D OCL1");
applog(LOG_DEBUG, "CompilerOptions: %s", CompilerOptions);
status = clBuildProgram(clState->program, 1, &devices[cgpu->device_id], CompilerOptions , NULL, NULL);
free(CompilerOptions);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error %d: Building Program (clBuildProgram)", status);
size_t logSize;
status = clGetProgramBuildInfo(clState->program, devices[cgpu->device_id], CL_PROGRAM_BUILD_LOG, 0, NULL, &logSize);
char *log = (char *)malloc(logSize);
status = clGetProgramBuildInfo(clState->program, devices[cgpu->device_id], CL_PROGRAM_BUILD_LOG, logSize, log, NULL);
applog(LOG_ERR, "%s", log);
return NULL;
}
prog_built = true;
#ifdef __APPLE__
/* OSX OpenCL breaks reading off binaries with >1 GPU so always build
* from source. */
goto built;
#endif
status = clGetProgramInfo(clState->program, CL_PROGRAM_NUM_DEVICES, sizeof(cl_uint), &cpnd, NULL);
if (unlikely(status != CL_SUCCESS)) {
applog(LOG_ERR, "Error %d: Getting program info CL_PROGRAM_NUM_DEVICES. (clGetProgramInfo)", status);
return NULL;
}
status = clGetProgramInfo(clState->program, CL_PROGRAM_BINARY_SIZES, sizeof(size_t)*cpnd, binary_sizes, NULL);
if (unlikely(status != CL_SUCCESS)) {
applog(LOG_ERR, "Error %d: Getting program info CL_PROGRAM_BINARY_SIZES. (clGetProgramInfo)", status);
return NULL;
}
/* The actual compiled binary ends up in a RANDOM slot! Grr, so we have
* to iterate over all the binary slots and find where the real program
* is. What the heck is this!? */
for (slot = 0; slot < cpnd; slot++)
if (binary_sizes[slot])
break;
/* copy over all of the generated binaries. */
applog(LOG_DEBUG, "Binary size for gpu %d found in binary slot %d: %d", cgpu->virtual_gpu, slot, (int)(binary_sizes[slot]));
if (!binary_sizes[slot]) {
applog(LOG_ERR, "OpenCL compiler generated a zero sized binary, FAIL!");
return NULL;
}
binaries[slot] = (char *)calloc(sizeof(char)* binary_sizes[slot], 1);
status = clGetProgramInfo(clState->program, CL_PROGRAM_BINARIES, sizeof(char *) * cpnd, binaries, NULL );
if (unlikely(status != CL_SUCCESS)) {
applog(LOG_ERR, "Error %d: Getting program info. CL_PROGRAM_BINARIES (clGetProgramInfo)", status);
return NULL;
}
/* Patch the kernel if the hardware supports BFI_INT but it needs to
* be hacked in */
if (patchbfi) {
unsigned remaining = binary_sizes[slot];
char *w = binaries[slot];
unsigned int start, length;
/* Find 2nd incidence of .text, and copy the program's
* position and length at a fixed offset from that. Then go
* back and find the 2nd incidence of \x7ELF (rewind by one
* from ELF) and then patch the opcocdes */
if (!advance(&w, &remaining, ".text"))
goto build;
w++; remaining--;
if (!advance(&w, &remaining, ".text")) {
/* 32 bit builds only one ELF */
w--; remaining++;
}
memcpy(&start, w + 285, 4);
memcpy(&length, w + 289, 4);
w = binaries[slot]; remaining = binary_sizes[slot];
if (!advance(&w, &remaining, "ELF"))
goto build;
w++; remaining--;
if (!advance(&w, &remaining, "ELF")) {
/* 32 bit builds only one ELF */
w--; remaining++;
}
w--; remaining++;
w += start; remaining -= start;
applog(LOG_DEBUG, "At %p (%u rem. bytes), to begin patching",
w, remaining);
patch_opcodes(w, length);
status = clReleaseProgram(clState->program);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error %d: Releasing program. (clReleaseProgram)", status);
return NULL;
}
clState->program = clCreateProgramWithBinary(clState->context, 1, &devices[cgpu->device_id], &binary_sizes[slot], (const unsigned char **)&binaries[slot], &status, NULL);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error %d: Loading Binary into cl_program (clCreateProgramWithBinary)", status);
return NULL;
}
/* Program needs to be rebuilt */
prog_built = false;
}
free(source);
/* Save the binary to be loaded next time */
binaryfile = fopen(binaryfilename, "wb");
if (!binaryfile) {
/* Not fatal, just means we build it again next time */
applog(LOG_DEBUG, "Unable to create file %s", binaryfilename);
} else {
if (unlikely(fwrite(binaries[slot], 1, binary_sizes[slot], binaryfile) != binary_sizes[slot])) {
applog(LOG_ERR, "Unable to fwrite to binaryfile");
return NULL;
}
fclose(binaryfile);
}
built:
if (binaries[slot])
free(binaries[slot]);
free(binaries);
free(binary_sizes);
applog(LOG_NOTICE, "Initialising kernel %s with%s bitalign, %spatched BFI",
filename, clState->hasBitAlign ? "" : "out", patchbfi ? "" : "un");
if (!prog_built) {
/* create a cl program executable for all the devices specified */
status = clBuildProgram(clState->program, 1, &devices[cgpu->device_id], NULL, NULL, NULL);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error %d: Building Program (clBuildProgram)", status);
size_t logSize;
status = clGetProgramBuildInfo(clState->program, devices[cgpu->device_id], CL_PROGRAM_BUILD_LOG, 0, NULL, &logSize);
char *log = (char *)malloc(logSize);
status = clGetProgramBuildInfo(clState->program, devices[cgpu->device_id], CL_PROGRAM_BUILD_LOG, logSize, log, NULL);
applog(LOG_ERR, "%s", log);
return NULL;
}
}
/* get a kernel object handle for a kernel with the given name */
clState->kernel = clCreateKernel(clState->program, "search", &status);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error %d: Creating Kernel from program. (clCreateKernel)", status);
return NULL;
}
size_t ipt = (algorithm->n / cgpu->lookup_gap +
(algorithm->n % cgpu->lookup_gap > 0));
size_t bufsize = 128 * ipt * cgpu->thread_concurrency;
/* Use the max alloc value which has been rounded to a power of
* 2 greater >= required amount earlier */
if (bufsize > cgpu->max_alloc) {
applog(LOG_WARNING, "Maximum buffer memory device %d supports says %lu",
cgpu->virtual_gpu, (unsigned long)(cgpu->max_alloc));
applog(LOG_WARNING, "Your scrypt settings come to %lu", (unsigned long)bufsize);
}
applog(LOG_DEBUG, "Creating scrypt buffer sized %lu", (unsigned long)bufsize);
clState->padbufsize = bufsize;
/* This buffer is weird and might work to some degree even if
* the create buffer call has apparently failed, so check if we
* get anything back before we call it a failure. */
clState->padbuffer8 = NULL;
clState->padbuffer8 = clCreateBuffer(clState->context, CL_MEM_READ_WRITE, bufsize, NULL, &status);
if (status != CL_SUCCESS && !clState->padbuffer8) {
applog(LOG_ERR, "Error %d: clCreateBuffer (padbuffer8), decrease TC or increase LG", status);
return NULL;
}
clState->CLbuffer0 = clCreateBuffer(clState->context, CL_MEM_READ_ONLY, 128, NULL, &status);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error %d: clCreateBuffer (CLbuffer0)", status);
return NULL;
}
clState->outputBuffer = clCreateBuffer(clState->context, CL_MEM_WRITE_ONLY, BUFFERSIZE, NULL, &status);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error %d: clCreateBuffer (outputBuffer)", status);
return NULL;
}
return clState;
}
/* We have only one thread that ever re-initialises GPUs, thus if any GPU
* init command fails due to a completely wedged GPU, the thread will never
* return, unable to harm other GPUs. If it does return, it means we only had
* a soft failure and then the reinit_gpu thread is ready to tackle another
* GPU */
void *reinit_gpu(void *userdata)
{
struct thr_info *mythr = (struct thr_info *)userdata;
struct cgpu_info *cgpu;
struct thr_info *thr;
struct timeval now;
char name[256];
int thr_id;
int gpu;
pthread_detach(pthread_self());
select_cgpu:
cgpu = (struct cgpu_info *)tq_pop(mythr->q, NULL);
if (!cgpu)
goto out;
if (clDevicesNum() != nDevs) {
applog(LOG_WARNING, "Hardware not reporting same number of active devices, will not attempt to restart GPU");
goto out;
}
gpu = cgpu->device_id;
rd_lock(&mining_thr_lock);
for (thr_id = 0; thr_id < mining_threads; ++thr_id) {
thr = mining_thr[thr_id];
cgpu = thr->cgpu;
if (cgpu->drv->drv_id != DRIVER_opencl)
continue;
if (dev_from_id(thr_id) != gpu)
continue;
thr->rolling = thr->cgpu->rolling = 0;
/* Reports the last time we tried to revive a sick GPU */
cgtime(&thr->sick);
if (!pthread_kill(thr->pth, 0)) {
applog(LOG_WARNING, "Thread %d still exists, killing it off", thr_id);
cg_completion_timeout(&thr_info_cancel_join, thr, 5000);
thr->cgpu->drv->thread_shutdown(thr);
} else
applog(LOG_WARNING, "Thread %d no longer exists", thr_id);
}
rd_unlock(&mining_thr_lock);
rd_lock(&mining_thr_lock);
for (thr_id = 0; thr_id < mining_threads; ++thr_id) {
int virtual_gpu;
thr = mining_thr[thr_id];
cgpu = thr->cgpu;
if (cgpu->drv->drv_id != DRIVER_opencl)
continue;
if (dev_from_id(thr_id) != gpu)
continue;
virtual_gpu = cgpu->virtual_gpu;
/* Lose this ram cause we may get stuck here! */
//tq_freeze(thr->q);
thr->q = tq_new();
if (!thr->q)
quit(1, "Failed to tq_new in reinit_gpu");
/* Lose this ram cause we may dereference in the dying thread! */
//free(clState);
applog(LOG_INFO, "Reinit GPU thread %d", thr_id);
clStates[thr_id] = initCl(virtual_gpu, name, sizeof(name), &cgpu->algorithm);
if (!clStates[thr_id]) {
applog(LOG_ERR, "Failed to reinit GPU thread %d", thr_id);
goto select_cgpu;
}
applog(LOG_INFO, "initCl() finished. Found %s", name);
if (unlikely(thr_info_create(thr, NULL, miner_thread, thr))) {
applog(LOG_ERR, "thread %d create failed", thr_id);
return NULL;
}
applog(LOG_WARNING, "Thread %d restarted", thr_id);
}
rd_unlock(&mining_thr_lock);
cgtime(&now);
get_datestamp(cgpu->init, sizeof(cgpu->init), &now);
rd_lock(&mining_thr_lock);
for (thr_id = 0; thr_id < mining_threads; ++thr_id) {
thr = mining_thr[thr_id];
cgpu = thr->cgpu;
if (cgpu->drv->drv_id != DRIVER_opencl)
continue;
if (dev_from_id(thr_id) != gpu)
continue;
cgsem_post(&thr->sem);
}
rd_unlock(&mining_thr_lock);
goto select_cgpu;
out:
return NULL;
}
_clState *initCl(unsigned int gpu, char *name, size_t nameSize, algorithm_t *algorithm)
{
_clState *clState = (_clState *)calloc(1, sizeof(_clState));
struct cgpu_info *cgpu = &gpus[gpu];
cl_platform_id platform = NULL;
char pbuff[256];
build_kernel_data *build_data = (build_kernel_data *) alloca(sizeof(struct _build_kernel_data));
cl_uint preferred_vwidth;
cl_device_id *devices;
cl_uint numDevices;
cl_int status;
if (!get_opencl_platform(opt_platform_id, &platform)) {
return NULL;
}
numDevices = clDevicesNum();
if (numDevices <= 0 ) return NULL;
devices = (cl_device_id *)alloca(numDevices*sizeof(cl_device_id));
/* Now, get the device list data */
status = clGetDeviceIDs(platform, CL_DEVICE_TYPE_GPU, numDevices, devices, NULL);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error %d: Getting Device IDs (list)", status);
return NULL;
}
applog(LOG_INFO, "List of devices:");
unsigned int i;
for (i = 0; i < numDevices; i++) {
status = clGetDeviceInfo(devices[i], CL_DEVICE_NAME, sizeof(pbuff), pbuff, NULL);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error %d: Getting Device Info", status);
return NULL;
}
applog(LOG_INFO, "\t%i\t%s", i, pbuff);
if (i == gpu) {
applog(LOG_INFO, "Selected %i: %s", gpu, pbuff);
strncpy(name, pbuff, nameSize);
}
}
if (gpu >= numDevices) {
applog(LOG_ERR, "Invalid GPU %i", gpu);
return NULL;
}
status = create_opencl_context(&clState->context, &platform);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error %d: Creating Context. (clCreateContextFromType)", status);
return NULL;
}
status = create_opencl_command_queue(&clState->commandQueue, &clState->context, &devices[gpu], cgpu->algorithm.cq_properties);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error %d: Creating Command Queue. (clCreateCommandQueue)", status);
return NULL;
}
clState->hasBitAlign = get_opencl_bit_align_support(&devices[gpu]);
status = clGetDeviceInfo(devices[gpu], CL_DEVICE_PREFERRED_VECTOR_WIDTH_INT, sizeof(cl_uint), (void *)&preferred_vwidth, NULL);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error %d: Failed to clGetDeviceInfo when trying to get CL_DEVICE_PREFERRED_VECTOR_WIDTH_INT", status);
return NULL;
}
applog(LOG_DEBUG, "Preferred vector width reported %d", preferred_vwidth);
status = clGetDeviceInfo(devices[gpu], CL_DEVICE_MAX_WORK_GROUP_SIZE, sizeof(size_t), (void *)&clState->max_work_size, NULL);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error %d: Failed to clGetDeviceInfo when trying to get CL_DEVICE_MAX_WORK_GROUP_SIZE", status);
return NULL;
}
applog(LOG_DEBUG, "Max work group size reported %d", (int)(clState->max_work_size));
size_t compute_units = 0;
status = clGetDeviceInfo(devices[gpu], CL_DEVICE_MAX_COMPUTE_UNITS, sizeof(size_t), (void *)&compute_units, NULL);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error %d: Failed to clGetDeviceInfo when trying to get CL_DEVICE_MAX_COMPUTE_UNITS", status);
return NULL;
}
// AMD architechture got 64 compute shaders per compute unit.
// Source: http://www.amd.com/us/Documents/GCN_Architecture_whitepaper.pdf
clState->compute_shaders = compute_units * 64;
applog(LOG_DEBUG, "Max shaders calculated %d", (int)(clState->compute_shaders));
status = clGetDeviceInfo(devices[gpu], CL_DEVICE_MAX_MEM_ALLOC_SIZE , sizeof(cl_ulong), (void *)&cgpu->max_alloc, NULL);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error %d: Failed to clGetDeviceInfo when trying to get CL_DEVICE_MAX_MEM_ALLOC_SIZE", status);
return NULL;
}
applog(LOG_DEBUG, "Max mem alloc size is %lu", (long unsigned int)(cgpu->max_alloc));
/* Create binary filename based on parameters passed to opencl
* compiler to ensure we only load a binary that matches what
* would have otherwise created. The filename is:
* name + g + lg + lookup_gap + tc + thread_concurrency + nf + nfactor + w + work_size + l + sizeof(long) + .bin
*/
char filename[255];
char strbuf[32];
if (cgpu->kernelname == NULL) {
applog(LOG_INFO, "No kernel specified, defaulting to %s", algorithm->kernelname);
cgpu->kernelname = algorithm->kernelname;
}
sprintf(strbuf, "%s.cl", cgpu->kernelname);
strcpy(filename, strbuf);
/* For some reason 2 vectors is still better even if the card says
* otherwise, and many cards lie about their max so use 256 as max
* unless explicitly set on the command line. Tahiti prefers 1 */
if (strstr(name, "Tahiti"))
preferred_vwidth = 1;
else if (preferred_vwidth > 2)
preferred_vwidth = 2;
/* All available kernels only support vector 1 */
cgpu->vwidth = 1;
/* Vectors are hard-set to 1 above. */
if (likely(cgpu->vwidth))
clState->vwidth = cgpu->vwidth;
else {
clState->vwidth = preferred_vwidth;
cgpu->vwidth = preferred_vwidth;
}
clState->goffset = true;
if (cgpu->work_size && cgpu->work_size <= clState->max_work_size)
clState->wsize = cgpu->work_size;
else
clState->wsize = 256;
if (!cgpu->opt_lg) {
applog(LOG_DEBUG, "GPU %d: selecting lookup gap of 2", gpu);
cgpu->lookup_gap = 2;
} else
cgpu->lookup_gap = cgpu->opt_lg;
if ((strcmp(cgpu->kernelname, "zuikkis") == 0) && (cgpu->lookup_gap != 2)) {
applog(LOG_WARNING, "Kernel zuikkis only supports lookup-gap = 2 (currently %d), forcing.", cgpu->lookup_gap);
cgpu->lookup_gap = 2;
}
if ((strcmp(cgpu->kernelname, "bufius") == 0) && ((cgpu->lookup_gap != 2) && (cgpu->lookup_gap != 4) && (cgpu->lookup_gap != 8))) {
applog(LOG_WARNING, "Kernel bufius only supports lookup-gap of 2, 4 or 8 (currently %d), forcing to 2", cgpu->lookup_gap);
cgpu->lookup_gap = 2;
}
if (!cgpu->opt_tc) {
unsigned int sixtyfours;
sixtyfours = cgpu->max_alloc / 131072 / 64 / (algorithm->n/1024) - 1;
cgpu->thread_concurrency = sixtyfours * 64;
if (cgpu->shaders && cgpu->thread_concurrency > cgpu->shaders) {
cgpu->thread_concurrency -= cgpu->thread_concurrency % cgpu->shaders;
if (cgpu->thread_concurrency > cgpu->shaders * 5)
cgpu->thread_concurrency = cgpu->shaders * 5;
}
applog(LOG_DEBUG, "GPU %d: selecting thread concurrency of %d", gpu, (int)(cgpu->thread_concurrency));
} else
cgpu->thread_concurrency = cgpu->opt_tc;
cl_uint slot, cpnd;
slot = cpnd = 0;
build_data->context = clState->context;
build_data->device = &devices[gpu];
// Build information
strcpy(build_data->source_filename, filename);
strcpy(build_data->platform, name);
strcpy(build_data->sgminer_path, sgminer_path);
if (opt_kernel_path && *opt_kernel_path) {
build_data->kernel_path = opt_kernel_path;
}
else {
build_data->kernel_path = NULL;
}
build_data->work_size = clState->wsize;
build_data->has_bit_align = clState->hasBitAlign;
build_data->opencl_version = get_opencl_version(devices[gpu]);
build_data->patch_bfi = needs_bfi_patch(build_data);
strcpy(build_data->binary_filename, cgpu->kernelname);
strcat(build_data->binary_filename, name);
if (clState->goffset)
strcat(build_data->binary_filename, "g");
set_base_compiler_options(build_data);
if (algorithm->set_compile_options)
algorithm->set_compile_options(build_data, cgpu, algorithm);
strcat(build_data->binary_filename, ".bin");
// Load program from file or build it if it doesn't exist
if (!(clState->program = load_opencl_binary_kernel(build_data))) {
applog(LOG_NOTICE, "Building binary %s", build_data->binary_filename);
if (!(clState->program = build_opencl_kernel(build_data, filename)))
return NULL;
if (save_opencl_kernel(build_data, clState->program)) {
/* Program needs to be rebuilt, because the binary was patched */
if (build_data->patch_bfi) {
clReleaseProgram(clState->program);
clState->program = load_opencl_binary_kernel(build_data);
}
} else {
if (build_data->patch_bfi)
quit(1, "Could not save kernel to file, but it is necessary to apply BFI patch");
}
}
// Load kernels
applog(LOG_NOTICE, "Initialising kernel %s with%s bitalign, %spatched BFI, nfactor %d, n %d",
filename, clState->hasBitAlign ? "" : "out", build_data->patch_bfi ? "" : "un",
algorithm->nfactor, algorithm->n);
/* get a kernel object handle for a kernel with the given name */
clState->kernel = clCreateKernel(clState->program, "search", &status);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error %d: Creating Kernel from program. (clCreateKernel)", status);
return NULL;
}
clState->n_extra_kernels = algorithm->n_extra_kernels;
if (clState->n_extra_kernels > 0) {
unsigned int i;
char kernel_name[9]; // max: search99 + 0x0
clState->extra_kernels = (cl_kernel *)malloc(sizeof(cl_kernel) * clState->n_extra_kernels);
for (i = 0; i < clState->n_extra_kernels; i++) {
snprintf(kernel_name, 9, "%s%d", "search", i + 1);
clState->extra_kernels[i] = clCreateKernel(clState->program, kernel_name, &status);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error %d: Creating ExtraKernel #%d from program. (clCreateKernel)", status, i);
return NULL;
}
}
}
size_t bufsize;
if (algorithm->rw_buffer_size < 0) {
size_t ipt = (algorithm->n / cgpu->lookup_gap +
(algorithm->n % cgpu->lookup_gap > 0));
bufsize = 128 * ipt * cgpu->thread_concurrency;
} else
bufsize = (size_t) algorithm->rw_buffer_size;
clState->padbuffer8 = NULL;
if (bufsize > 0) {
/* Use the max alloc value which has been rounded to a power of
* 2 greater >= required amount earlier */
if (bufsize > cgpu->max_alloc) {
applog(LOG_WARNING, "Maximum buffer memory device %d supports says %lu",
gpu, (unsigned long)(cgpu->max_alloc));
applog(LOG_WARNING, "Your settings come to %lu", (unsigned long)bufsize);
}
applog(LOG_DEBUG, "Creating buffer sized %lu", (unsigned long)bufsize);
/* This buffer is weird and might work to some degree even if
* the create buffer call has apparently failed, so check if we
* get anything back before we call it a failure. */
clState->padbuffer8 = clCreateBuffer(clState->context, CL_MEM_READ_WRITE, bufsize, NULL, &status);
if (status != CL_SUCCESS && !clState->padbuffer8) {
applog(LOG_ERR, "Error %d: clCreateBuffer (padbuffer8), decrease TC or increase LG", status);
return NULL;
}
}
clState->CLbuffer0 = clCreateBuffer(clState->context, CL_MEM_READ_ONLY, 128, NULL, &status);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error %d: clCreateBuffer (CLbuffer0)", status);
return NULL;
}
clState->outputBuffer = clCreateBuffer(clState->context, CL_MEM_WRITE_ONLY, BUFFERSIZE, NULL, &status);
if (status != CL_SUCCESS) {
applog(LOG_ERR, "Error %d: clCreateBuffer (outputBuffer)", status);
return NULL;
}
return clState;
}