Fix matrix size overflow issue

Fix matrix size overflow issue when cast from int to size_t implicitly.

Author: abuccts

superbench/benchmarks/micro_benchmarks/cublaslt_gemm/cublaslt_gemm.cu

@@ -88,7 +88,7 @@ template <typename T> cudaDataType_t get_datatype() {
 }
 
 template <typename Ta, typename Tb, typename Tout>
-float timing_matmul_tn(int m, int n, int k, int batch, int warmup, int iter) {
+float timing_matmul_tn(size_t m, size_t n, size_t k, int batch, int warmup, int iter) {
     // init matrix
     Ta *matrix_a = nullptr;
     Tb *matrix_b = nullptr;
@@ -101,7 +101,7 @@ float timing_matmul_tn(int m, int n, int k, int batch, int warmup, int iter) {
     init_matrix<Tb><<<216, 1024>>>(matrix_b, 2.f, k * n * std::max(batch, 1));
 
     // init gemm
-    int lda = k, ldb = k, ldd = m;
+    size_t lda = k, ldb = k, ldd = m;
     std::unique_ptr<cublasLtGemm> gemm = std::make_unique<cublasLtGemm>();
     gemm->Init();
     gemm->Setup(m, n, k, batch, lda, ldb, ldd, get_datatype<Ta>(), get_datatype<Tb>(), get_datatype<Tout>(),