Skip to Main Content
Forums

DevOps, CI/CD and Automation

Announcement

For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle.com. Technical questions should be asked in the appropriate category. Thank you!

Interested in getting your voice heard by members of the Developer Marketing team at Oracle? Check out this post for AppDev or this post for AI focus group information.

Sun Studio 12 - Compiling for 64-bit sparc using 'cc -xarch=v9'

807578Nov 11 2008 — edited Nov 12 2008
Hello,

I am using Sun Studio 12 on a Sun Blade running 64-bit Solaris 10 u3 for sparc. Properties are set for the "Solaris sparc" platform in my projects. I am compiling HDF5 software (http://www.hdfgroup.org/HDF5/release/obtain5.html), and I noticed this in the INSTALL notes:

Similarly, users compiling on a Solaris machine and desiring to
build the distribution with 64-bit support should specify the
correct flags with the CC variable:

$ CC='cc -xarch=v9' ./configure

Does the fact that the platform architecture is set to sparc in the project properties make it unnecessary to specify -xarch=v9 for the CC environment variable, or should I always use $CC='cc -xarch=v9' when compiling on my sparc?

Thank you in advance...

Comments

843829
Are you by any chance running on a dual processor machine? If you are, you might be running with -server (this is the new ergonomic change in Tiger), and with a larger default heap size. The best way to check this is to run
java -showversion myClass
A new feature in Java5 was to determine if the machine was better off using -server instead of -client (>2cpu, >2gb of memory). If that was true then -server is used and certain GC tuning parameters are specified. If the VM detects you are on a "Server Class" machine, than by default 1/4 of your memory is used as maximum heap up to a maximum of 1gb. So its possible that's what you are hitting.
843829
You are right, this may be the problem.

Is there a way to change the default behavior or do I always set -server/-client manually to make shure my favorite java vm gets started?
843829
You can continue to use the server VM if you wish, but just remember to specify minimum and maximum heap sizes with -Xms and -Xmx.
1 - 3
Locked Post
New comments cannot be posted to this locked post.

Post Details

Locked on Dec 10 2008
Added on Nov 11 2008
#developer-studio, #developer-studio-c-c-fortran-compilers
14 comments
319 views