do i need cublaAlloc after cudaMalloc to use cublas?

Accelerated Computing CUDA CUDA Programming and Performance
1

I already defined arrays in device using “cudaMalloc” then do i need to “cublaAlloc” again so that cublas can use array in device?

if so, i defined

cudaMalloc((void **) &cost_d, sizeof(REAL)*itotal2)

what is corresponding commands of cublaAlloc?

cublasAlloc(itotal2, sizeof(REAL)itotal2, (void*) &cost_d)

is this correct?

Thanks in advance.

2

No. cublasAlloc is just a wrapper around cudaMalloc. Just pass the cudaMalloc pointers straight into the CUBLAS calls.

3

No. cublasAlloc is just a wrapper around cudaMalloc. Just pass the cudaMalloc pointers straight into the CUBLAS calls.

4

YDD is right, cubasAlloc is just a wrapper around cudaMalloc.

Also cublasSetMatrix/cubasGetMatrix cublasSetVector/cublasGetVector are just wrappers around cudaMemcpy or cudaMemcpy2D

5

YDD is right, cubasAlloc is just a wrapper around cudaMalloc.

Also cublasSetMatrix/cubasGetMatrix cublasSetVector/cublasGetVector are just wrappers around cudaMemcpy or cudaMemcpy2D

6

YDD is right, cubasAlloc is just a wrapper around cudaMalloc.

Also cublasSetMatrix/cubasGetMatrix cublasSetVector/cublasGetVector are just wrappers around cudaMemcpy or cudaMemcpy2D