svd benchmarks added

benchmarks/build.gradle.kts

@@ -84,6 +84,11 @@ benchmark {
         iterationTimeUnit = "ms"
     }
 
+    configurations.register("svd") {
+        commonConfiguration()
+        include("svdBenchmark")
+    }
+
     configurations.register("buffer") {
         commonConfiguration()
         include("BufferBenchmark")

benchmarks/src/jvmMain/kotlin/space/kscience/kmath/benchmarks/SVDBenchmark.kt

@@ -0,0 +1,34 @@
+/*
+ * Copyright 2018-2021 KMath contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package space.kscience.kmath.benchmarks
+import kotlinx.benchmark.Benchmark
+import kotlinx.benchmark.Blackhole
+import kotlinx.benchmark.Scope
+import kotlinx.benchmark.State
+import space.kscience.kmath.tensors.core.BroadcastDoubleTensorAlgebra.svdGolabKahan
+import space.kscience.kmath.tensors.core.DoubleTensorAlgebra
+import space.kscience.kmath.tensors.core.DoubleTensorAlgebra.Companion.svd
+
+@State(Scope.Benchmark)
+class SVDBenchmark {
+    companion object {
+        val tensor = DoubleTensorAlgebra.randomNormal(intArrayOf(10, 10, 10), 0)
+    }
+
+    @Benchmark
+    fun svdPowerMethod(blackhole: Blackhole) {
+        blackhole.consume(
+            tensor.svd()
+        )
+    }
+
+    @Benchmark
+    fun svdGolabKahan(blackhole: Blackhole) {
+        blackhole.consume(
+            tensor.svdGolabKahan()
+        )
+    }
+}