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Fixed #6. Disable multi-thread swap when incx==0 or incy==0.

This commit is contained in:
Xianyi Zhang 2011-02-20 17:14:38 +08:00
parent 8dd3fd7f26
commit 78da0e0a0c
2 changed files with 11 additions and 1 deletions
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5
interface/swap.c
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@ -79,6 +79,11 @@ void CNAME(blasint n, FLOAT *x, blasint incx, FLOAT *y, blasint incy){
#ifdef SMP #ifdef SMP
nthreads = num_cpu_avail(1); nthreads = num_cpu_avail(1);
//disable multi-thread when incx==0 or incy==0
//In that case, the threads would be dependent.
if (incx == 0 || incy == 0)
nthreads = 1;
if (nthreads == 1) { if (nthreads == 1) {
#endif #endif

5
interface/zswap.c
View File

@ -80,6 +80,11 @@ void CNAME(blasint n, FLOAT *x, blasint incx, FLOAT *y, blasint incy){
#ifdef SMP #ifdef SMP
nthreads = num_cpu_avail(1); nthreads = num_cpu_avail(1);
//disable multi-thread when incx==0 or incy==0
//In that case, the threads would be dependent.
if (incx == 0 || incy == 0)
nthreads = 1;
if (nthreads == 1) { if (nthreads == 1) {
#endif #endif