intelblas_gemm clean patch

[listenlink]

Hi @gongzg @ptillet

This patch clean the hack code on tuning and add external profile of intelblas_gemm(image) for float32 dtype, please have a review, thx.

[gongzg]

@ptillet ping for review. Thanks.

[ptillet]

I've looked at it and it looks good to me. I'll try it tomorrow to make sure there is no regression on AMD and NVidia HW.

[ptillet]

This looks great. Very good performance improvements! Thanks :)

I only have one minor question: is it possible to remove the OpenCL warnings? Successful BLAS calls are not expected to write anything on cout or cerr.

[listenlink]

@ptillet , I just remove the ocl building warnings, please check it again, thanks.

[ptillet]

The warnings are gone, cool.

However, I've tested the PR on another machine and have the following segmentation fault:

BENCH	M	N	K	AT	BT	ISAAC
Deep	1760	16	1760	N	N	0.17	
Deep	1760	32	1760	N	N	0.31	
Deep	1760	64	1760	N	N	0.35	
Deep	1760	128	1760	N	N	0.40	
Deep	1760	7000	1760	N	N	0.49	
Deep	2048	16	2048	N	N	0.19	
Deep	2048	32	2048	N	N	0.33	
Deep	2048	64	2048	N	N	0.38	
Deep	2048	128	2048	N	N	0.36	
Deep	2048	7000	2048	N	N	0.48	
Deep	2560	16	2560	N	N	0.21	
Deep	2560	32	2560	N	N	0.37	
Deep	2560	64	2560	N	N	0.36	
Deep	2560	128	2560	N	N	0.38	
Deep	2560	7000	2560	N	N	0.47	
Deep	1760	16	1760	T	N	0.11	
Deep	1760	32	1760	T	N	0.22	

Program received signal SIGSEGV, Segmentation fault.
0x0000000000000000 in ?? ()
(gdb) bt
#0  0x0000000000000000 in ?? ()
#1  0x00007ffff7551629 in isaac::driver::dispatch::f_impl<&isaac::driver::dispatch::clinit, _cl_mem* (*)(_cl_context*, unsigned long, _cl_image_format const*, _cl_image_desc const*, void*, int*), _cl_context*, unsigned long, _cl_image_format const*, _cl_image_desc const*, void*, int*> (lib_h=@0x7ffff7dd9920: 0x617ad0, 
    cache=@0x7ffff7dd9a38: 0x0, name=0x7ffff75abe37 "clCreateImage") at /tmp/isaac/include/isaac/driver/dispatch.h:74
#2  0x00007ffff754f4cd in isaac::driver::dispatch::clCreateImage (a=0x620010, b=1, c=0x7fffffffc830, d=0x7fffffffc910, e=0x0, f=0x7fffffffc7ac)
    at /tmp/isaac/lib/driver/dispatch.cpp:177
#3  0x00007ffff74fce02 in isaac::templates::intelblas_gemm_image::enqueue (this=0xcad900, queue=..., program=..., suffix="14", control=...)
    at /tmp/isaac/lib/jit/generation/gemm.cpp:829

I'm looking into it...

[ptillet]

It was a configuration problem with my machine (conflicts with the Altera OpenCL SDK).