Function check_need_full_bench

dnn/test/cuda/chanwise_convolution3d.cpp:19–24

#if MEGDNN_WITH_BENCHMARK
bool check_need_full_bench() {
    if (getenv("MEGDNN_CHANWISE_CONV3D_FULLBENCH"))
        return true;
    printf("set MEGDNN_CHANWISE_CONV3D_FULLBENCH to run full benchmark\n");
    return false;
}
#endif
Convolution3D::Param gconv_param(Convolution3D::Param p) {
    p.sparse = Convolution3D::Param::Sparse::GROUP;