[Bug 100105] Make Theano OpenCL support work on Clover and RadeonSI

[bugzilla-daemon@freedesktop.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=100105

            Bug ID: 100105
           Summary: Make Theano OpenCL support work on Clover and RadeonSI
           Product: Mesa
           Version: git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: major
          Priority: medium
         Component: Drivers/Gallium/radeonsi
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: vedran@miletic.net
        QA Contact: dri-devel@lists.freedesktop.org

$ DEVICE="opencl0:0" python -c "import pygpu;pygpu.test()"
pygpu is installed in
/usr/lib64/python2.7/site-packages/pygpu-0.6.2-py2.7-linux-x86_64.egg/pygpu
NumPy version 1.11.2
NumPy relaxed strides checking option: False
NumPy is installed in /usr/lib64/python2.7/site-packages/numpy
Python version 2.7.13 (default, Jan 12 2017, 17:59:37) [GCC 6.3.1 20161221 (Red
Hat 6.3.1-1)]
nose version 1.3.7
*** Testing for AMD FIJI (DRM 3.8.0 / 4.9.13-200.fc25.x86_64, LLVM 5.0.0)

========================================================

AN INTERNAL KERNEL BUILD ERROR OCCURRED!
device name = AMD FIJI (DRM 3.8.0 / 4.9.13-200.fc25.x86_64, LLVM 5.0.0)
error = -43
memory pattern = Register accumulation based swap, computing kernel generator
Subproblem dimensions: dims[0].itemY = 32, dims[0].itemX = 32, dims[0].y = 32,
dims[0].x = 32, dims[0].bwidth = 64; ; dims[1].itemY = 4, dims[1].itemX = 4,
dims[1].y = 4, dims[1].x = 4, dims[1].bwidth = 8; ; 
Parallelism granularity: pgran->wgDim = 1, pgran->wgSize[0] = 64,
pgran->wgSize[1] = 1, pgran->wfSize = 64
Kernel extra flags: 369130144
Source:

#ifdef DOUBLE_PRECISION
    #ifdef cl_khr_fp64
    #pragma OPENCL EXTENSION cl_khr_fp64 : enable
    #else
    #pragma OPENCL EXTENSION cl_amd_fp64 : enable
    #endif
#endif

__kernel void Sdot_kernel( __global float *_X, __global float *_Y, __global
float *scratchBuff,
                                        uint N, uint offx, int incx, uint offy,
int incy, int doConj )
{
    __global float *X = _X + offx;
    __global float *Y = _Y + offy;
    float dotP = (float) 0.0;

    if ( incx < 0 ) {
        X = X + (N - 1) * abs(incx);
    }
    if ( incy < 0 ) {
        Y = Y + (N - 1) * abs(incy);
    }

    int gOffset;
    for( gOffset=(get_global_id(0) * 4); (gOffset + 4 - 1)<N; gOffset+=(
get_global_size(0) * 4 ) )
    {
        float4 vReg1, vReg2, res;

        #ifdef INCX_NONUNITY
             vReg1 = (float4)(  (X + (gOffset*incx))[0 + ( incx * 0)],  (X +
(gOffset*incx))[0 + ( incx * 1)],  (X + (gOffset*incx))[0 + ( incx * 2)],  (X +
(gOffset*incx))[0 + ( incx * 3)]);
        #else
            vReg1 = vload4(  0, (__global float *) (X + gOffset) );
        #endif

        #ifdef INCY_NONUNITY
             vReg2 = (float4)(  (Y + (gOffset*incy))[0 + ( incy * 0)],  (Y +
(gOffset*incy))[0 + ( incy * 1)],  (Y + (gOffset*incy))[0 + ( incy * 2)],  (Y +
(gOffset*incy))[0 + ( incy * 3)]);
        #else
            vReg2 = vload4(  0, (__global float *) (Y + gOffset) );
        #endif

        ;
         res =  vReg1 *  vReg2 ;
        dotP +=  res .S0 +  res .S1 +  res .S2 +  res .S3;
;          // Add-up elements in the vector to give a scalar
    }

    // Loop for the last thread to handle the tail part of the vector
    // Using the same gOffset used above
    for( ; gOffset<N; gOffset++ )
    {
        float sReg1, sReg2, res;
        sReg1 = X[gOffset * incx];
        sReg2 = Y[gOffset * incy];

        ;
             res =  sReg1 *  sReg2 ;
             dotP =  dotP +  res ;
        }

    // Note: this has to be called outside any if-conditions- because REDUCTION
uses barrier
    // dotP of work-item 0 will have the final reduced item of the work-group
    __local float viraW [ 64 ];
        uint kFbwL = get_local_id(0);
         viraW [ kFbwL ] =  dotP ;
        barrier(CLK_LOCAL_MEM_FENCE);

        if( kFbwL < 32 ) {
                 viraW [ kFbwL ] = viraW [ kFbwL ] + viraW [ kFbwL + 32 ];
        }
        barrier(CLK_LOCAL_MEM_FENCE);

        if( kFbwL < 16 ) {
                 viraW [ kFbwL ] = viraW [ kFbwL ] + viraW [ kFbwL + 16 ];
        }
        barrier(CLK_LOCAL_MEM_FENCE);

        if( kFbwL < 8 ) {
                 viraW [ kFbwL ] = viraW [ kFbwL ] + viraW [ kFbwL + 8 ];
        }
        barrier(CLK_LOCAL_MEM_FENCE);

        if( kFbwL < 4 ) {
                 viraW [ kFbwL ] = viraW [ kFbwL ] + viraW [ kFbwL + 4 ];
        }
        barrier(CLK_LOCAL_MEM_FENCE);

        if( kFbwL < 2 ) {
                 viraW [ kFbwL ] = viraW [ kFbwL ] + viraW [ kFbwL + 2 ];
        }
        barrier(CLK_LOCAL_MEM_FENCE);

        if( kFbwL == 0 ) {
         dotP  = viraW [0] + viraW [1];
        }

    if( (get_local_id(0)) == 0 ) {
        scratchBuff[ get_group_id(0) ] = dotP;
    }
}



--------------------------------------------------------

Build log:


========================================================

Segmentation fault (core dumped)

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