Package: openjdk-6-jre-headless Version: 6b17-1.7-1 Severity: normal I am not sure if this is a limitation in openjdk, but while trying to package jblas 1.0 (http://mikiobraun.github.com/jblas/ ) I recognized that it runs a lot slower under openjdk than under sun java.
If this is a known problem then sorry for my ignorance. /usr/lib/jvm/java-1.6.0-openjdk/jre/bin/java -jar jblas-1.0.1.jar Simple benchmark for jblas Running sanity benchmarks. checking vector addition... ok checking matrix multiplication... ok checking existence of dsyev...... ok checking XERBLA... ok Sanity checks passed. Each benchmark will take about 5 seconds... Running benchmark "Java matrix multiplication, double precision". n = 10 : 574.8 MFLOPS (1437049 iterations in 5.0 seconds) n = 100 : 1839.3 MFLOPS (4599 iterations in 5.0 seconds) n = 1000 : 1176.4 MFLOPS (3 iterations in 5.1 seconds) Running benchmark "Java matrix multiplication, single precision". n = 10 : 605.4 MFLOPS (1513554 iterations in 5.0 seconds) n = 100 : 1794.8 MFLOPS (4487 iterations in 5.0 seconds) n = 1000 : 1960.5 MFLOPS (5 iterations in 5.1 seconds) Running benchmark "ATLAS matrix multiplication, double precision". n = 10 : 773.6 MFLOPS (1933990 iterations in 5.0 seconds) n = 100 : 3597.3 MFLOPS (8994 iterations in 5.0 seconds) n = 1000 : 4938.1 MFLOPS (13 iterations in 5.3 seconds) Running benchmark "ATLAS matrix multiplication, single precision". n = 10 : 785.8 MFLOPS (1964485 iterations in 5.0 seconds) n = 100 : 6257.1 MFLOPS (15643 iterations in 5.0 seconds) n = 1000 : 8217.2 MFLOPS (21 iterations in 5.1 seconds) /usr/lib/jvm/java-6-sun-1.6.0.17/jre/bin/java -jar jblas-1.0.1.jar Simple benchmark for jblas Running sanity benchmarks. checking vector addition... ok -- org.jblas CONFIG BLAS native library not found in path. Copying native library from the archive. Consider installing the library somewhere in the path (for Windows: PATH, for Linux: LD_LIBRARY_PATH). -- org.jblas CONFIG ArchFlavor native library not found in path. Copying native library libjblas_arch_flavor from the archive. Consider installing the library somewhere in the path (for Windows: PATH, for Linux: LD_LIBRARY_PATH). -- org.jblas CONFIG Loading libjblas_arch_flavor.so from /lib/static/Linux/amd64/. -- org.jblas CONFIG Loading libjblas.so from /lib/static/Linux/amd64/sse3/. checking matrix multiplication... ok checking existence of dsyev...... ok checking XERBLA... ok Sanity checks passed. Each benchmark will take about 5 seconds... Running benchmark "Java matrix multiplication, double precision". n = 10 : 699.1 MFLOPS (1747749 iterations in 5.0 seconds) n = 100 : 1805.5 MFLOPS (4514 iterations in 5.0 seconds) n = 1000 : 1282.9 MFLOPS (4 iterations in 6.2 seconds) Running benchmark "Java matrix multiplication, single precision". n = 10 : 700.3 MFLOPS (1750641 iterations in 5.0 seconds) n = 100 : 1842.9 MFLOPS (4608 iterations in 5.0 seconds) n = 1000 : 1940.2 MFLOPS (5 iterations in 5.2 seconds) Running benchmark "ATLAS matrix multiplication, double precision". n = 10 : 692.2 MFLOPS (1730600 iterations in 5.0 seconds) n = 100 : 4753.7 MFLOPS (11885 iterations in 5.0 seconds) n = 1000 : 9129.3 MFLOPS (23 iterations in 5.0 seconds) Running benchmark "ATLAS matrix multiplication, single precision". n = 10 : 678.4 MFLOPS (1696019 iterations in 5.0 seconds) n = 100 : 9011.1 MFLOPS (22528 iterations in 5.0 seconds) n = 1000 : 14637.5 MFLOPS (37 iterations in 5.1 seconds) -- System Information: Debian Release: squeeze/sid APT prefers stable APT policy: (700, 'stable'), (650, 'testing'), (600, 'unstable'), (500, 'oldstable'), (1, 'experimental') Architecture: amd64 (x86_64) Kernel: Linux 2.6.32.3-sonne (SMP w/2 CPU cores; PREEMPT) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Versions of packages openjdk-6-jre-headless depends on: ii ca-certificates-java 20091021 Common CA certificates (JKS keysto ii dpkg 1.15.5.6 Debian package management system ii java-common 0.34 Base of all Java packages ii libc6 2.10.2-5 Embedded GNU C Library: Shared lib ii libcups2 1.4.2-7 Common UNIX Printing System(tm) - ii libfreetype6 2.3.11-1 FreeType 2 font engine, shared lib ii libgcc1 1:4.4.3-1 GCC support library ii libjpeg62 6b-15 The Independent JPEG Group's JPEG ii liblcms1 1.18.dfsg-1.2+b1 Color management library ii libnss3-1d 3.12.5-2 Network Security Service libraries ii openjdk-6-jre-lib 6b17-1.7-1 OpenJDK Java runtime (architecture ii rhino 1.7R2-3 JavaScript engine written in Java ii tzdata-java 2010b-1 time zone and daylight-saving time ii zlib1g 1:1.2.3.4.dfsg-3 compression library - runtime Versions of packages openjdk-6-jre-headless recommends: ii icedtea-6-jre-cacao 6b17-1.7-1 Alternative JVM for OpenJDK, using Versions of packages openjdk-6-jre-headless suggests: ii libnss-mdns 0.10-3.1 NSS module for Multicast DNS name pn sun-java6-fonts <none> (no description available) ii ttf-baekmuk 2.2-2 Baekmuk series TrueType fonts ii ttf-dejavu-core 2.30-2 Vera font family derivate with add ii ttf-indic-fonts 1:0.5.6 Metapackage for free Indian langua ii ttf-kochi-gothic 20030809-6 Kochi Subst Gothic Japanese TrueTy ii ttf-sazanami-gothic 20040629-8 Sazanami Gothic Japanese TrueType ii ttf-sazanami-mincho 20040629-8 Sazanami Mincho Japanese TrueType ii ttf-wqy-zenhei 0.8.38-1 "WenQuanYi Zen Hei" A Hei-Ti Style -- no debconf information -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". 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