Implementation of SVE in gemv routines.

[Jai]

Hello All,

I am rying to implement sve in gemv(levle2) routines, I see that for implementing sve in level 3 and level1(dot product) there is not any changes made in the gemv.c programs under interface, only sve code is added under kernel/arm64. Function gevm.c under interface that is calling the gemv_n.S is a function pointer(correct me if I am wrong) which points/calls according the type of the function (like dgemv, sgemv etc.). I wrote sve code under /kernel/arm64 . After that I tried rebuilding the library but that is not working, still gemv_n.S is being called. Please help/guide me how can I solve the problem.

I don't have the idea of writing generic code which can be called by the gemv function of interface and if there are any reference materials please share that also.

Thank You.

[Zhang Xianyi]

Hi,

Please check KERNEL files in kernel/arm64.  It will compile different gemv_*.S into gemv_n.o

Regards,

Xianyi

[Jai]

Thank Xianyi for quick reply,

I can see the different gemv_n.o under kernel, but I am not able to figure out how to integrate my code for gemv using sve. I am following the way it is done for dot product. They wrote the dot.c and dot_kernel_sve.c under kernel/arm64 (no other change i could find). The same gemv program under interface calls this dot.c which was earlier calling dot.S. 

Thanks.

[Jai]

Thanks Xianyi for replying.

I can see the gemv_n.o files under  kernel, but I am not able to get how to integrate my code so that gemv function under interface calls my function( goes to my sve code for matrix vector multiplication added under kernel/arm64). I am following the implementation they have done for dot product.

Regards.

Jai.

On Tuesday 12 December 2023 at 09:43:34 UTC+5:30 Zhang Xianyi wrote: