Add benchmarks for sgemm

Author: asi1024

benchmarks/cupy/examples/gemm/bench_sgemm.py

@@ -0,0 +1,26 @@
+from benchmarks.numpy.common import Benchmark
+from benchmarks.utils import sync
+from benchmarks.utils.helper import parameterize
+
+from .utils import benchmark
+from .sgemm import sgemm
+
+import cupy
+
+
+@sync
+@parameterize([('m', [1, 1500]),
+               ('n', [1, 1500]),
+               ('k', [1, 3000])])
+class SGEMM(Benchmark):
+    def setup(self, m, n, k):
+        low, high = -1, 1
+        dtype = cupy.float32
+        self.A = cupy.random.uniform(low, high, (m, k)).astype(dtype)
+        self.B = cupy.random.uniform(low, high, (k, n)).astype(dtype)
+
+    def time_sgemm(self, m, n, k):
+        sgemm(self.A, self.B)
+
+    def time_dot(self, m, n, k):
+        cupy.dot(self.A, self.B)