1brc/calculate_average_roman-r-m.sh

#!/bin/sh
#
#  Copyright 2023 The original authors
#
#  Licensed under the Apache License, Version 2.0 (the "License");
#  you may not use this file except in compliance with the License.
#  You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS,
#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#  See the License for the specific language governing permissions and
#  limitations under the License.
#

if [ -f target/CalculateAverage_roman_r_m_image ]; then
    echo "Running native image 'target/CalculateAverage_roman_r_m_image'." 1>&2
    target/CalculateAverage_roman_r_m_image
else
    JAVA_OPTS="--enable-preview -XX:+UseTransparentHugePages"
    JAVA_OPTS="$JAVA_OPTS -XX:+UnlockExperimentalVMOptions -XX:+TrustFinalNonStaticFields -dsa -XX:+UseNUMA"
    # epsilon GC needs enough memory or it makes things worse
    # see https://stackoverflow.com/questions/58087596/why-are-repeated-memory-allocations-observed-to-be-slower-using-epsilon-vs-g1
    JAVA_OPTS="$JAVA_OPTS -XX:+UnlockExperimentalVMOptions -XX:-EnableJVMCI -XX:+UseEpsilonGC -Xmx1G -Xms1G -XX:+AlwaysPreTouch"

    echo "Running on JVM" 1>&2
    java $JAVA_OPTS --class-path target/average-1.0.0-SNAPSHOT.jar dev.morling.onebrc.CalculateAverage_roman_r_m
fi