1x1 kernel hangs indefinitely in `miopenFindConvolutionBackwardWeightsAlgorithm` about miopen HOT 5 CLOSED

Sorry, it fails the forward verification only without -t 1:

$ ./MIOpenDriver conv -H 14 -W 14 -P 1 -k 512 -c 256 -n 128 -p 0 -q 0 -u 2 -v 2 -x 1 -y 1     
MIOpenDriver: conv -H 14 -W 14 -P 1 -k 512 -c 256 -n 128 -p 0 -q 0 -u 2 -v 2 -x 1 -y 1
Forward Convolution Failed: 0.206861
^C

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Closing this for now as the common problem is missing synchronization without -t 1 flag. This is the same issue as #12

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Even with the -t 1 flag, it still hangs indefinitely. The failed verification was just an additional thing.

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@patflick I narrowed it down to a bug in the Direct algorithm. If you disable the Direct algorithm with this env. variable, the test passes.
MIOPEN_DEBUG_CONV_DIRECT=0

MIOPEN_DEBUG_CONV_DIRECT=0 ./bin/MIOpenDriver conv -H 14 -W 14 -P 1 -k 512 -c 256 -n 128 -p 0 -q 0 -u 2 -v 2 -x 1 -y 1 
MIOpenDriver: conv -H 14 -W 14 -P 1 -k 512 -c 256 -n 128 -p 0 -q 0 -u 2 -v 2 -x 1 -y 1
Forward Convolution Verifies on CPU and GPU
Backward Convolution Data Verifies on CPU and GPU
Backward Convolution Weights Verifies on CPU and GPU

But the downside is that the Direct algorithm is disabled for fwd as well resulting in slower fwd time.

Let us look into fixing it. Thanks for reporting.
cc\ @alyashev

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Disabling Direct algorithm for all stride=2 cases fixes this issue for now 756f73f. We will update and optimize the Direct algorithm in subsequent releases.

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