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Enhancing Core Utilization in BLAS Calls: A Scalable Architecture #4741

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Merged
martin-frbg merged 1 commit into from
Jun 20, 2024
Merged

Enhancing Core Utilization in BLAS Calls: A Scalable Architecture #4741

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12 changes: 12 additions & 0 deletions driver/level3/level3_thread.c
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Original file line number Diff line number Diff line change
Expand Up @@ -570,6 +570,8 @@ static int gemm_driver(blas_arg_t *args, BLASLONG *range_m, BLASLONG
InitializeCriticalSection((PCRITICAL_SECTION)&level3_lock);
#else
static pthread_mutex_t level3_lock = PTHREAD_MUTEX_INITIALIZER;
static pthread_cond_t level3_wakeup = PTHREAD_COND_INITIALIZER;
volatile static BLASLONG CPU_AVAILABLE = MAX_CPU_NUMBER;
#endif

blas_arg_t newarg;
Expand Down Expand Up @@ -639,6 +641,12 @@ static int gemm_driver(blas_arg_t *args, BLASLONG *range_m, BLASLONG
EnterCriticalSection((PCRITICAL_SECTION)&level3_lock);
#else
pthread_mutex_lock(&level3_lock);
while(CPU_AVAILABLE < nthreads) {
pthread_cond_wait(&level3_wakeup, &level3_lock);
}
CPU_AVAILABLE -= nthreads;
WMB;
pthread_mutex_unlock(&level3_lock);
#endif

#ifdef USE_ALLOC_HEAP
Expand Down Expand Up @@ -783,6 +791,10 @@ static int gemm_driver(blas_arg_t *args, BLASLONG *range_m, BLASLONG
#elif defined(OS_WINDOWS)
LeaveCriticalSection((PCRITICAL_SECTION)&level3_lock);
#else
pthread_mutex_lock(&level3_lock);
CPU_AVAILABLE += nthreads;
WMB;
pthread_cond_signal(&level3_wakeup);
pthread_mutex_unlock(&level3_lock);
#endif

Expand Down