Change benchmark to fork once by default

Signed-off-by: Ryan Nett <[email protected]>

Author: rnett

ndarray/src/test/java/org/tensorflow/ndarray/benchmark/NdArrayBenchmark.java

@@ -38,7 +38,7 @@
 import org.tensorflow.ndarray.NdArrays;
 import org.tensorflow.ndarray.StdArrays;
 
-@Fork(value = 0, jvmArgs = {"-Xms4G", "-Xmx4G"})
+@Fork(value = 1, jvmArgs = {"-Xms4G", "-Xmx4G"})
 @BenchmarkMode(Mode.AverageTime)
 @Warmup(iterations = 3)
 @Measurement(iterations = 5)