From 07ed9980fcd683048b15db88088f859d39ad6f4c Mon Sep 17 00:00:00 2001
From: margarita0303 <lashina.2000@gmail.com>
Date: Wed, 13 Jul 2022 18:34:26 +0300
Subject: [PATCH] svd benchmarks added

---
 benchmarks/build.gradle.kts                   |  5 +++
 .../kscience/kmath/benchmarks/SVDBenchmark.kt | 34 +++++++++++++++++++
 2 files changed, 39 insertions(+)
 create mode 100644 benchmarks/src/jvmMain/kotlin/space/kscience/kmath/benchmarks/SVDBenchmark.kt

diff --git a/benchmarks/build.gradle.kts b/benchmarks/build.gradle.kts
index f8d39b9c5..143681aec 100644
--- a/benchmarks/build.gradle.kts
+++ b/benchmarks/build.gradle.kts
@@ -84,6 +84,11 @@ benchmark {
         iterationTimeUnit = "ms"
     }
 
+    configurations.register("svd") {
+        commonConfiguration()
+        include("svdBenchmark")
+    }
+
     configurations.register("buffer") {
         commonConfiguration()
         include("BufferBenchmark")
diff --git a/benchmarks/src/jvmMain/kotlin/space/kscience/kmath/benchmarks/SVDBenchmark.kt b/benchmarks/src/jvmMain/kotlin/space/kscience/kmath/benchmarks/SVDBenchmark.kt
new file mode 100644
index 000000000..e6fd716dd
--- /dev/null
+++ b/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()
+        )
+    }
+}
\ No newline at end of file