void readTest()
{
// Because src is volatile, the loads below will not be optimized away
volatile veci16_t *src = (veci16_t*) region1Base + currentThread() * LOOP_UNROLL;
veci16_t result;
int transferCount = kTransferSize / (64 * NUM_THREADS * LOOP_UNROLL);
int unrollCount;
int startTime = getTime();
startParallel();
do
{
// The compiler will automatically unroll this
for (unrollCount = 0; unrollCount < LOOP_UNROLL; unrollCount++)
result = src[unrollCount];
src += NUM_THREADS * LOOP_UNROLL;
}
while (--transferCount);
endParallel();
if (currentThread() == 0)
{
int endTime = getTime();
printf("read: %g bytes/cycle\n", (float) kTransferSize / (endTime - startTime));
}
}
void writeTest()
{
veci16_t *dest = (veci16_t*) region1Base + currentThread() * LOOP_UNROLL;
const veci16_t values = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 11, 14, 15 };
int transferCount = kTransferSize / (64 * NUM_THREADS * LOOP_UNROLL);
int unrollCount;
int startTime = getTime();
startParallel();
do
{
// The compiler will automatically unroll this
for (unrollCount = 0; unrollCount < LOOP_UNROLL; unrollCount++)
dest[unrollCount] = values;
dest += NUM_THREADS * LOOP_UNROLL;
}
while (--transferCount);
endParallel();
if (currentThread() == 0)
{
int endTime = getTime();
printf("write: %g bytes/cycle\n", (float) kTransferSize / (endTime - startTime));
}
}
void copyTest()
{
veci16_t *dest = (veci16_t*) region1Base + currentThread() * LOOP_UNROLL;
veci16_t *src = (veci16_t*) region2Base + currentThread() * LOOP_UNROLL;
veci16_t values = __builtin_nyuzi_makevectori(0xdeadbeef);
int transferCount = kTransferSize / (64 * NUM_THREADS * LOOP_UNROLL);
int unrollCount;
int startTime = getTime();
startParallel();
do
{
// The compiler will automatically unroll this
for (unrollCount = 0; unrollCount < LOOP_UNROLL; unrollCount++)
dest[unrollCount] = src[unrollCount];
dest += NUM_THREADS * LOOP_UNROLL;
src += NUM_THREADS * LOOP_UNROLL;
}
while (--transferCount);
endParallel();
if (currentThread() == 0)
{
int endTime = getTime();
printf("copy: %g bytes/cycle\n", (float) kTransferSize / (endTime - startTime));
}
}
void ioWriteTest()
{
volatile uint32_t * const ioBase = (volatile uint32_t*) 0xffff0004;
int transferCount;
int startTime;
int endTime;
int total;
startTime = getCycleCount();
startParallel();
for (transferCount = 0; transferCount < 1024; transferCount += 8)
{
*ioBase = 0;
*ioBase = 0;
*ioBase = 0;
*ioBase = 0;
*ioBase = 0;
*ioBase = 0;
*ioBase = 0;
*ioBase = 0;
}
endParallel();
if (getCurrentThreadId() == 0)
{
endTime = getCycleCount();
printf("ioWrite: %g cycles/transfer\n", (float)(endTime - startTime)
/ (transferCount * NUM_THREADS));
}
}
