[rocm-libraries] ROCm/rocm-libraries#4872 (commit ca623f7)

[CK] Small improvements for grouped conv backward weight
 (#4872)

## Motivation

Improvements for CK Tile convolution builder run function and atol/rtol
calculations.

## Technical Details

- Add preprocessing function for wrw when k_batch is larger than 1 for
builder run function
- Divide num acums by number of groups to get real number of accums

## Test Plan

CI wrw tests

## Test Result

pending

## Submission Checklist

- [x] Look over the contributing guidelines at
https://github.com/ROCm/ROCm/blob/develop/CONTRIBUTING.md#pull-requests.

AICK-783

test/grouped_convnd_bwd_weight/test_grouped_convnd_bwd_weight_bilinear.cpp

@@ -244,7 +244,8 @@ class TestGroupedConvndBwdWeight : public ::testing::Test
                 float max_accumulated_value =
                     *std::max_element(wei_host.mData.begin(), wei_host.mData.end());
 
-                const ck::index_t num_accums         = out.GetElementSize() / conv_param.K_;
+                const ck::index_t num_accums =
+                    out.GetElementSize() / (conv_param.K_ * conv_param.G_);
                 const ck::index_t num_accums_split_k = split_k;
                 double rtol =
                     ck::utils::get_relative_threshold<InDataType, WeiDataType, AccDataType>(

test/grouped_convnd_bwd_weight/test_grouped_convnd_bwd_weight_scale.cpp

@@ -199,7 +199,8 @@ class TestGroupedConvndBwdWeight : public ::testing::Test
                 float max_accumulated_value =
                     *std::max_element(wei_host.mData.begin(), wei_host.mData.end());
 
-                const ck::index_t num_accums         = out.GetElementSize() / conv_param.K_;
+                const ck::index_t num_accums =
+                    out.GetElementSize() / (conv_param.K_ * conv_param.G_);
                 const ck::index_t num_accums_split_k = split_k;
                 double rtol =
                     ck::utils::get_relative_threshold<InDataType, WeiDataType, AccDataType>(