GOSTSec/sgminer
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Explicitly grab first work item before entering asynchronous loop to prevent apparent HW errors when first starting due to stale data on the GPU.

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This commit is contained in:
Con Kolivas 2011-07-14 18:39:52 +10:00
parent df43b7135e
commit c4cc83dceb
1 changed files with 20 additions and 3 deletions
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23
main.c
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@ -1539,7 +1539,7 @@ static void set_threads_hashes(unsigned int vectors, unsigned int *threads,
static void *gpuminer_thread(void *userdata)
{
const unsigned long cycle = opt_log_interval / 5 ? : 1;
struct timeval tv_start, tv_end, diff;
struct timeval tv_start, tv_end, diff, tv_workstart;
struct thr_info *mythr = userdata;
const int thr_id = mythr->id;
uint32_t *res, *blank_res;
@ -1577,11 +1577,28 @@ static void *gpuminer_thread(void *userdata)
gettimeofday(&tv_start, NULL);
globalThreads[0] = threads;
localThreads[0] = clState->work_size;
diff.tv_sec = ~0UL;
diff.tv_sec = 0;
gettimeofday(&tv_end, NULL);
status = clEnqueueWriteBuffer(clState->commandQueue, clState->outputBuffer, CL_TRUE, 0,
BUFFERSIZE, blank_res, 0, NULL, NULL);
if (unlikely(status != CL_SUCCESS))
{ applog(LOG_ERR, "Error: clEnqueueWriteBuffer failed."); goto out; }
gettimeofday(&tv_workstart, NULL);
/* obtain new work from internal workio thread */
if (unlikely(!get_work(work, requested))) {
applog(LOG_ERR, "work retrieval failed, exiting "
"gpu mining thread %d", mythr->id);
goto out;
}
mythr->cgpu->getworks++;
work->thr_id = thr_id;
requested = false;
precalc_hash(&work->blk, (uint32_t *)(work->midstate), (uint32_t *)(work->data + 64));
work->blk.nonce = 0;
while (1) {
struct timeval tv_workstart, tv_gpustart, tv_gpuend;
struct timeval tv_gpustart, tv_gpuend;
suseconds_t gpu_us;
gettimeofday(&tv_gpustart, NULL);