how to implement batch spmv

[zhouq123]

i have batch matrix A and vector B, how to implement batch spmv

[qanhpham]

Hi @zhouq123, are matrices in the batch different from each other? Do they multiply with the same vector or vectors are different in the batch?

[fbusato]

please also note that the code should be similar to batched SpMM https://github.com/NVIDIA/CUDALibrarySamples/tree/master/cuSPARSE/spmm_csr_batched

[zhouq123]

Hi @zhouq123, are matrices in the batch different from each other? Do they multiply with the same vector or vectors are different in the batch?

yes, they are all different from each other

[zhouq123]

please also note that the code should be similar to batched SpMM https://github.com/NVIDIA/CUDALibrarySamples/tree/master/cuSPARSE/spmm_csr_batched

but there is an error "spmm_csr_batched_example test FAILED: wrong result" when I set B_num_cols to 1 in the example of spmm_csr_batched or spmm_coo_batched

[qanhpham]

This bug has been fixed in the latest version. Please upgraded to the latest cuSPARSE to avoid this issue.

[zhouq123]

This bug has been fixed in the latest version. Please upgraded to the latest cuSPARSE to avoid this issue.

the latest version is cuda toolkit or CUDALibrarySamples? I had upgraded to the latest CUDALibrarySamples but this issue is still exist.