[CUDA] remove src/treelearner/kernels

[shiyu1994]

Remove these files because they are used in old CUDA version, which is not supported anymore.

[StrikerRUS]

Nice catch!

Then the following variables are not needed anymore:

LightGBM/CMakeLists.txt

Lines 256 to 273 in 60b0155

	set(
	BASE_DEFINES
	-DPOWER_FEATURE_WORKGROUPS=12
	-DUSE_CONSTANT_BUF=0
	)
	set(
	ALLFEATS_DEFINES
	${BASE_DEFINES}
	-DENABLE_ALL_FEATURES
	)
	set(
	FULLDATA_DEFINES
	${ALLFEATS_DEFINES}
	-DIGNORE_INDICES
	)
	message(STATUS "ALLFEATS_DEFINES: ${ALLFEATS_DEFINES}")
	message(STATUS "FULLDATA_DEFINES: ${FULLDATA_DEFINES}")

UPD: this code also can be removed:

LightGBM/CMakeLists.txt

Lines 638 to 644 in 60b0155

	# histograms are list of object libraries. Linking object library to other
	# object libraries only gets usage requirements, the linked objects won't be
	# used. Thus we have to call target_link_libraries on final targets here.
	if(BUILD_CLI)
	target_link_libraries(lightgbm PRIVATE ${histograms})
	endif()
	target_link_libraries(_lightgbm PRIVATE ${histograms})

[StrikerRUS]

Great, thanks!

[shiyu1994]

I just restarted the VM for CUDA CI agent. But it seems that the agent is not on yet. Let's wait a few hours to see if it works.

[jameslamb]

Thanks! I just restarted CUDA CI for this PR: https://github.com/microsoft/LightGBM/actions/runs/12490727657?pr=6766

[jameslamb]

@shiyu1994 looks like something else might need to be done. The job has been waiting almost 8 hours and hasn't been picked up by the runner.

Requested labels: self-hosted, linux
Job defined at: microsoft/LightGBM/.github/workflows/cuda.yml@refs/pull/6766/merge
Waiting for a runner to pick up this job...

build link: https://github.com/microsoft/LightGBM/actions/runs/12490727657/job/34924599078?pr=6766

I do see one runner at https://github.com/microsoft/LightGBM/actions/runners?tab=self-hosted ... does it matter that the label is "Linux" (capital L) and our configuration is looking for "linux" (lowercase l)?

LightGBM/.github/workflows/cuda.yml

Line 29 in 60b0155

runs-on: [self-hosted, linux]

Could you try changing the label there to lowercase "linux"? I don't have permission.

[jameslamb]

:/ I tested in another PR... don't think the case of the label is the problem: #6768 (comment)

I don't see any clearly-relevant reports at https://github.com/actions/runner/issues, and it looks like the last release there was about 6 weeks ago: https://github.com/actions/runner/releases

@shiyu1994 hopefully you can help restart the agent process or maybe update it to the newest release of https://github.com/actions/runner? I'm not sure what else we can do.