message: [XLA] Drop memory limit from the redzone allocator used for gemm algorithm picking
  The memory limit makes sense for scratch space, but not for actual buffers
  allocated.
diff: @@ -15,6 +15,8 @@ limitations under the License.
  #include "tensorflow/compiler/xla/service/gpu/gemm_algorithm_picker.h"
  +#include <limits>
  +
  #include "tensorflow/compiler/xla/service/gpu/backend_configs.pb.h"
  #include "tensorflow/compiler/xla/service/gpu/buffer_comparator.h"
  #include "tensorflow/compiler/xla/service/gpu/gemm_thunk.h"
  @@ -247,7 +249,8 @@ static StatusOr<bool> RunOnInstruction(HloInstruction* instr,
  const HloModuleConfig& hlo_module_config = instr->GetModule()->config();
  se::RedzoneAllocator input_output_allocator(
  - stream, allocator, PtxOptsFromConfig(hlo_module_config));
  + stream, allocator, PtxOptsFromConfig(hlo_module_config),
  + /*memory_limit=*/std::numeric_limits<int64>::max());
  BufferComparator comparator(instr->shape(), hlo_module_config);
  