SPIR-V validation error when running Kmeans kernel

[diptorupd]

Numba-PVC produces the following error when running kmeans. The error message is continuously printed on stdout and the process has to be killed to stop execution.

error: line 164: ID 71[%_323_i] has not been defined
%_324_i = OpLoad %float %_323_i Aligned 4
SPIR-V Validation failed...
error: line 164: ID 71[%_323_i] has not been defined
%_324_i = OpLoad %float %_323_i Aligned 4

......

To perform a preliminary triage, I reduced the kmeans program to a single kernel. The kernel code is attached below.

@dppy.kernel
def groupByCluster(arrayP, arrayPcluster,
                   arrayC,
                   num_points, num_centroids):
    idx = dppy.get_global_id(0)

    if idx < num_points:
        minor_distance = -1

        for i in range(num_centroids):
            dx = arrayP[idx, 0] - arrayC[i, 0]
            dy = arrayP[idx, 1] - arrayC[i, 1]
            my_distance = sqrt(dx * dx + dy * dy)

            if minor_distance > my_distance or minor_distance == -1:
                minor_distance = my_distance
                arrayPcluster[idx] = i

[diptorupd]

@akharche we have turned off spirv-val inside numba-dppy. However, we should investigate these issues as they might be related to the GDB failure you reported. Can you take this issue up to investigate the list of cases where all we get spirv-val failures?

[diptorupd]

too old.