Is there an 'easy' way to convert 32Bit code to 64Bit code. I have this benchmark i need to run on different machines and it would be nice if i could run it on the 64 bit machines ass wel.
The output when compiling(1) and running(2) are the following:
(1)
(2)
The make file and source file can be found here if you want to have a look at it yourself. http://users.pandora.be/steviewilliams/heapsort.zip
Mind that my knowledge of C is very basic .
Greetz
Whats the difference between 32bit and 64bit OS's or applications. I understand it a little but its just not clicking the way the teacher explained to me
thanks, any info would be much appreciated (1 Reply)
when using the command :
cat /proc/cpuinfo I get some basic info back on the cpu..
but it doesn't tell me if I am using a 64 or 32 bit processor ..
a) is this the right command to find this ?
b) if it is not what is ? and how do I get that information..
thanx moxxx68 (2 Replies)
Where can I get a list that maps the each Linux version to corresponding 32/64 bits model?
e.g.
OS -> Model (ILP32, LP64, ...)
RHLE3 -> ?
RHLE4 -> ?
RHLE5 -> ?
...
It would be better if there is such a list that contains most of current UNIX OS versions.
... (1 Reply)
i have solaris 10 x86 64bit installed on my pc (dell 3100). i then decided to move my hard drive to another pc (dell 4600). I noticed that each time i boot up, the OS show as 32 bit (instead of 64bit) and i can't even get past this stage to the login page.
when i moved it back to dell 3100 it... (13 Replies)
Not really a Unix question as such :o, but what advantages or disadvantages are there between using 32bit or 64bit applications on a T5220 running Solaris 10? What about mixing them e.g. 64 bit app using 32 bit libraries or vice versa? (1 Reply)
I have an application which builds and executes without error on a 32bit implementation of Linux. When I transferred the code to a new project on a 64bit implementation, the code will build without error, but the pthread functions, such as pthread_attr_setschedparam() return an 'Invalid Argument'... (3 Replies)
Hi Gurus,
I need to check whether the compiler installed in my system supports 64bit compilation.
Server - Sun fire v490
OS - Solaris 5.9
Processor - Sparcv9 (64bit)
Install Directory - /opt/SUNWSpro
Compiler Model - Sun Forte C Compiler.
My development team is claiming that there... (20 Replies)
Hi,
I have a C code which builds and works fine on 32bit linux machine.
Now i want to convert that code to build and run on 64 bit linux machine. I dont want to maintain two separate sources for 32 and 64 bit build. Same source should get build on 32 as well as 64 bit machine (when a... (2 Replies)
Hello, I am trying to use a worktool on SLES 10 (32-bit) and it is saying I do not have libcap.so.2:
error while loading shared libraries: libcap.so.2: cannot open shared object file: No such file or directory
Is there an easy way for me to install this library? A quick Google search... (4 Replies)
Discussion started by: bstring
4 Replies
LEARN ABOUT REDHAT
msync
MSYNC(2) Linux Programmer's Manual MSYNC(2)NAME
msync - synchronize a file with a memory map
SYNOPSIS
#include <unistd.h>
#include <sys/mman.h>
#ifdef _POSIX_MAPPED_FILES
#ifdef _POSIX_SYNCHRONIZED_IO
int msync(const void *start, size_t length, int flags);
#endif
#endif
DESCRIPTION
msync flushes changes made to the in-core copy of a file that was mapped into memory using mmap(2) back to disk. Without use of this call
there is no guarantee that changes are written back before munmap(2) is called. To be more precise, the part of the file that corresponds
to the memory area starting at start and having length length is updated. The flags argument may have the bits MS_ASYNC, MS_SYNC and
MS_INVALIDATE set, but not both MS_ASYNC and MS_SYNC. MS_ASYNC specifies that an update be scheduled, but the call returns immediately.
MS_SYNC asks for an update and waits for it to complete. MS_INVALIDATE asks to invalidate other mappings of the same file (so that they
can be updated with the fresh values just written).
RETURN VALUE
On success, zero is returned. On error, -1 is returned, and errno is set appropriately.
ERRORS
EINVAL start is not a multiple of PAGESIZE, or any bit other than MS_ASYNC | MS_INVALIDATE | MS_SYNC is set in flags.
EFAULT The indicated memory (or part of it) was not mapped.
CONFORMING TO
POSIX.1b (formerly POSIX.4)
SEE ALSO mmap(2), B.O. Gallmeister, POSIX.4, O'Reilly, pp. 128-129 and 389-391.
Linux 1.3.86 1996-04-12 MSYNC(2)