[ESIMD] Rewrite Stencils tests using buffers

[DenisBakhvalov]

I analyzed the history of ESIMD stencil tests in CI and found that stencil tests are sensitive to the time limit. I.e. they are not hanging but timing out before finishing the job. Since #148 Stencil.cpp was failing several times per day.

As a first step to resolve the issue, we rewrite the stencil tests using SYCL buffers, which should improve performance.

Author: kychendev [email protected]

[DenisBakhvalov]

Cuda failures are unrelated.

[kbobrovs]

@DenisBakhvalov, did you consider reverting #define DIM_SIZE (1 << 13) back to #define DIM_SIZE (1 << 10) as it was before #148?
Also, I think it is good to have both - USM and buffer-based tests, so you can add your new version as one more test.

[DenisBakhvalov]

@DenisBakhvalov, did you consider reverting #define DIM_SIZE (1 << 13) back to #define DIM_SIZE (1 << 10) as it was before #148?
Also, I think it is good to have both - USM and buffer-based tests, so you can add your new version as one more test.

I tend to think we should decrease DIM_SIZE in order to fit into the time limits, but according to @kychendev, it will decrease the test coverage.

[DenisBakhvalov]

Closed in favor of #244