# Items tagged with 64bit64bit Tagged Items Feed

### Waiting for Kernel Connection: Kernel...

December 29 2012 by Maple

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Dear friends,

I used Maple 13 previously, now am trying to install Maple 16 (Windows 7, 64bit, 2GB RAM), installation is ok.

But when I start using the Maple, then I am getting an error message 'Waiting for Kernel Connection' and then Kernel connection not found.

I disabled the windows firewall, and then reinstalled Maple  16, and again I got the same error.

what can I do now? how to cross that? its urgent for me.

### Installed Maple 64 bit on Win7(64bit) -...

December 22 2012 by Maple 16

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4

Hey guys,

I installed the 64 bit version of Maple 16, but it's still running as "maple.exe*32"? There is a similar quesion somewhere here...but this hasnt solved my issue...

There is no more Maple-software installed on the notebook. The other maple-tasks (mserver.exe) are running in 64bit-mode...

some specs: Thinkpad W520, i7-processor, 8GB RAM, Win7 (64bit)

Merry Christmas! :)

### can't find hflogb

June 05 2012 by Maple

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Which library is this hflogb implemented in? I could not find it in either libc or libm.

What is the exact name of the function that has been changed in 64bit distributions?

(Knowing this, there would be an easy fix. Even now, one can run older maple on newer linuxen: simply copy the old system libs (from /lib/x86_64-linux-gnu and /usr/lib/x86_64-linux-gnu to a library under the maple install dir and tweak LD_LIBRARY_PATH in the maple wrapper script), but identifying...

### Maple (64-bit) add-in for Excel (32-bit...

May 06 2012 by Maple 16

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I'm using the 64-bit version of Maple 16.0 and Excel 2010 (32-bit). (Most people using Office 2010 install the 32-bit version on 64-bit operating systems.)

Is it possible to use the Maple addin with the above setup ? I tried selecting WMIMPLEX64.xla, but Excel appears to want WMIMPLEX.xla (from the 32-bit).

What is the easiest fix ? Can I find a copy of WMIMPLEX.xla and use with with Maple64bit and Excel32bit ? Do I need to uninstall Maple64-bit and install Maple32-bit ?

### Simulation failed

January 22 2012 by MapleSim 5

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3

Bonjour

Je n'arrive pas à faire fonctionner un montage simple.

J'ai un message d'erreur : (in dsolve/numeric/RunSimulation) unable to compile, please check your options by running with infolevel [ToExternal]:=1; simulation failed.

Que dois-je faire ?

Windows 7  64bits / Maple 61bits

Merci

### OMP_NUM_THREADS and 64bit Maple on Windo...

December 10 2011 by Maple

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1

Yesterday I wrote a post that began,

"I realized recently that, while 64bit Maple 15 on Windows (XP64, 7) is now using accelerated BLAS from Intel's MKL, the Operating System environment variable OMP_NUM_THREADS is not being set automatically."

But that first sentence is about where it stopped being correct, as far as how I was interpreting the performance on 64bit Maple on Windows. So I've rewritten the whole post, and this is the revision.

I concluded that, by setting the Windows operating system environment variable OMP_NUM_THREADS to 4, performance would double on a quad core i7. I even showed timings to help establish that. And since I know that memory management and dynamic linking can cause extra overhead, I re-ran all my examples in freshly launched GUI sessions, with the user-interface completely closed between examples. But I got caught out in a mistake, nonetheless. The problem was that there is extra real-time cost to having my machine's Windows operating system dynamically open the MKL dll the very first time after bootup.

So my examples done first after bootup were at a disadvantage. I knew that I could not look just at measured cpu time, since for such threaded applications that reports as some kind of sum of cycles for all threads. But I failed to notice the real-time measurements were being distorted by the cost of loading the dlls the first time. And that penalty is not necessarily paid for each freshly launched, completely new Maple session. So my measurements were not fair.

Here is some illustration of the extra real-time cost, which I was not taking into account. I'll do Matrix-Matrix multiplication for a 1x1 example, to try and show just how much this extra cost is unrelated to the actual computation. In these examples below, I've done a full reboot on Windows 7 where so annotated. The extra time cost for the very first load of the dynamic MKL libraries can be from 1 to over 3 seconds. That's about the same as the cpu time this i7 takes to do the full 3000x3000 Matrix multiplication! Hence the confusion.

Roman brought up hyperthreading in his comment on the original post. So part of redoing all these examples, with full restarts between them, is testing each case both with and without hyperthreading enabled (in the BIOS).

Quad core Intel i7. (four physical cores)

-------------------------------

> restart: # actual OS reboot
> getenv(OMP_NUM_THREADS);   # NULL, unset in OS

> CodeTools:-Usage( Matrix([[3.]]) . Matrix([[3.]]) ): # initialize external libs
memory used=217.18KiB, alloc change=127.98KiB, cpu time=219.00ms, real time=3.10s

> CodeTools:-Usage( Matrix([[3.]]) . Matrix([[3.]]) ):
memory used=9.46KiB, alloc change=0 bytes, cpu time=0ns, real time=0ns

> restart: # actual OS reboot
"4"

> CodeTools:-Usage( Matrix([[3.]]) . Matrix([[3.]]) ): # initialize external libs
memory used=216.91KiB, alloc change=127.98KiB, cpu time=140.00ms, real time=2.81s

> CodeTools:-Usage( Matrix([[3.]]) . Matrix([[3.]]) ):
memory used=9.46KiB, alloc change=0 bytes, cpu time=0ns, real time=0ns

------------------------------

> restart: # actual OS reboot
> getenv(OMP_NUM_THREADS);    # NULL, unset in OS

> CodeTools:-Usage( Matrix([[3.]]) . Matrix([[3.]]) ): # initialize external libs
memory used=217.00KiB, alloc change=127.98KiB, cpu time=202.00ms, real time=2.84s

> CodeTools:-Usage( Matrix([[3.]]) . Matrix([[3.]]) ):
memory used=9.46KiB, alloc change=0 bytes, cpu time=0ns, real time=0ns

> restart: # actual OS reboot
"4"

> CodeTools:-Usage( Matrix([[3.]]) . Matrix([[3.]]) ): # initialize external libs
memory used=215.56KiB, alloc change=127.98KiB, cpu time=187.00ms, real time=1.12s

> CodeTools:-Usage( Matrix([[3.]]) . Matrix([[3.]]) ):
memory used=9.46KiB, alloc change=0 bytes, cpu time=0ns, real time=0ns



Having established that the first use after reboot was incurring a real time penalty of a few seconds, I redid the timings in order to gauge the benefit of having OMP_NUM_THREADS set appropriately. These too were done with and without hyperthreading enabled. The timings below appear to indicate that slightly bettern performance can be had for this example in the case that hyperthreading is disabled. The timings also appear to indicate that having OMP_NUM_THREADS unset results in performance competitive with having it set to the number of physical cores.

Hyperthreading disabled in BIOS
-------------------------------

> restart:
> CodeTools:-Usage( Matrix([[3.]]) . Matrix([[3.]]) ): # initialize external libs
memory used=217.84KiB, alloc change=127.98KiB, cpu time=141.00ms, real time=142.00ms

> getenv(OMP_NUM_THREADS);  # NULL, unset in OS

> M:=LinearAlgebra:-RandomMatrix(3000,datatype=float[8]):
> CodeTools:-Usage( M . M ):
memory used=68.67MiB, alloc change=68.74MiB, cpu time=7.50s, real time=1.92s

> restart:
> CodeTools:-Usage( Matrix([[3.]]) . Matrix([[3.]]) ): # initialize external libs
memory used=217.84KiB, alloc change=127.98KiB, cpu time=141.00ms, real time=141.00ms

"1"

> M:=LinearAlgebra:-RandomMatrix(3000,datatype=float[8]):
> CodeTools:-Usage( M . M ):
memory used=68.67MiB, alloc change=68.74MiB, cpu time=7.38s, real time=7.38s

> restart:
> CodeTools:-Usage( Matrix([[3.]]) . Matrix([[3.]]) ): # initialize external libs
memory used=217.11KiB, alloc change=127.98KiB, cpu time=125.00ms, real time=125.00ms

"4"

> M:=LinearAlgebra:-RandomMatrix(3000,datatype=float[8]):
> CodeTools:-Usage( M . M ):
memory used=68.67MiB, alloc change=68.74MiB, cpu time=7.57s, real time=1.94s

------------------------------

> restart:
> CodeTools:-Usage( Matrix([[3.]]) . Matrix([[3.]]) ): # initialize external libs
memory used=216.57KiB, alloc change=127.98KiB, cpu time=125.00ms, real time=125.00ms

> getenv(OMP_NUM_THREADS);  # NULL, unset in OS

> M:=LinearAlgebra:-RandomMatrix(3000,datatype=float[8]):
> CodeTools:-Usage( M . M ):
memory used=68.67MiB, alloc change=68.74MiB, cpu time=8.46s, real time=2.15s

> restart:
> CodeTools:-Usage( Matrix([[3.]]) . Matrix([[3.]]) ): # initialize external libs
memory used=216.80KiB, alloc change=127.98KiB, cpu time=125.00ms, real time=125.00ms

"1"

> M:=LinearAlgebra:-RandomMatrix(3000,datatype=float[8]):
> CodeTools:-Usage( M . M ):
memory used=68.67MiB, alloc change=68.74MiB, cpu time=7.35s, real time=7.35s

> restart:
> CodeTools:-Usage( Matrix([[3.]]) . Matrix([[3.]]) ): # initialize external libs
memory used=216.80KiB, alloc change=127.98KiB, cpu time=125.00ms, real time=125.00ms

> getenv(OMP_NUM_THREADS);  # NULL, unset in OS
"4"

> M:=LinearAlgebra:-RandomMatrix(3000,datatype=float[8]):
> CodeTools:-Usage( M . M ):
memory used=68.67MiB, alloc change=68.74MiB, cpu time=8.56s, real time=2.15s

> restart:
> CodeTools:-Usage( Matrix([[3.]]) . Matrix([[3.]]) ): # initialize external libs
memory used=216.80KiB, alloc change=127.98KiB, cpu time=125.00ms, real time=125.00ms

"8"

> M:=LinearAlgebra:-RandomMatrix(3000,datatype=float[8]):
> CodeTools:-Usage( M . M ):
memory used=68.67MiB, alloc change=68.74MiB, cpu time=8.69s, real time=2.23s


With all those new timing measurements it appears that having to set the global environment variable OMP_NUM_THREADS to the number of physical cores may not be necessary. The performance is comparable, when that variable is left unset. So, while this post is now a non-story, it's interesting to know.

And the lesson about comparitive timings is also useful. Sometimes, even complete GUI/kernel relaunch is not enough to get a level and fair field for comparison.

### 32bit and 64bit versions on same PC

November 16 2011 by Maple 15

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Can I install both 32 and 64 bit version on one PC? (64 bit in Program Files and 32 bit in Program Files (x86))?

If so, does it mean  I will need to use a second license? Not a problem, my Office version is 32 bt and have Maple 64 bit installed and I want to use Excel.

October 29 2011 by Maple 15

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3

With Maple15.01 on a x86_64 linux box running Fedora 14, I get the following error when trying to run a basic comand from LinearAlgebra:

> with(LinearAlgebra);
> R := RandomMatrix(4, 4):
> Eigenvalues(R);
Error, (in ifactor/SmallFactors/ext) external library libmodLA.so could not be found/used

Could someone please tell me what the required environment setup is so that Maple can find and use the external shared libraries?...

### Installing Maple 15 without MSVC

April 14 2011 by Maple 15

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I just downloaded Maple 15 and am trying to install on a 64-bit Windows 7 machine.

About halfway through the installation, there is a step where you are either supposed to supply the path to a batch file that will supply the environment variables that will locate Microsoft Visual C compiler, or supply them later as an option. The instructions say that Maple has a default batch file that will do this, but when that option is chosen, nothing shows up in...

### GMP version 5.0.1

December 08 2010 by Maple

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Maple uses the LGPL licensed GMP as a support library for doing large integer and high precision float computations. There exists is a later version of GMP than was bundled and shipped in Maple 14.x. A natural question is whether it would improve Maple's performance. Another question is whether it can be used within Maple 14.

### Classic on XP64

November 19 2009 by Maple

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There is no released Classic interface to accompany the 64 bit version of Maple (12, 13) for the 64 bit Windows XP64 operating system. Personally, I prefer running the Standard over the Classic interface, although sometimes I miss common subexpression display for lengthy symbolic output.

The Maple Classic interface appears to talk to the Maple kernel only over a socket (or similar), and the...

### Classic on 64bit Linux

October 26 2008 by Maple

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Has anyone tried the technique used here, to run Maple 12's 32bit Classic GUI with the 64bit Maple 12 kernel binaries, on Linux?

Should I try and update it to work with Maple 11 or 12?

It looks like some symlinks would have to change or be added, relative to the way that I did it for Maple 10.

Has anyone ever tried to do a similar thing on 64bit Windows?

Dave L

### BLAS in Maple

May 24 2007 by Maple

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For double-precision ("hardware") real and complex floating-point operations on Matrices, Vectors, and Arrays Maple makes use of its external-calling mechanism to get to compiled code. A great deal of such compiled code for array operations requires what are known as Basic Linear Algebra Subprograms (BLAS). The BLAS libraries provide support not only directly for Matrix-Vector arithmetic but also indirectly in other external compiled libraries used by Statistics, ArrayTools, LinearAlgebra[Modular], etc.

### faster GMP on x86-64

May 08 2007 by

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Maple uses the GnuMP (a.k.a. GMP, or gmp) library in computing with large integers, see ?gmp .

Visiting the GMP web page one can find this interesting benchmark table. It indicates a higher known benchmark for Opteron/Athlon64 than for Core2. (I don't know that GMP makes special use of multiple cores at this time.)

### Maple 10 and 64bit Linux, part 2

February 05 2006 by Maple

4

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Many Maple users have a preference of user interface, whether it be command line (TTY), Standard (Worksheet or Document mode), or Classic. My personal view is that each may be suited for different types of task. While it's understood that Maplesoft is dedicated to supporting the Standard interface, I understand that some users remain devoted to the Classic interface.

I often use Maple 10 on a 64bit Linux machine, on which the performance of the 64bit Maple 10 kernel is comparatively faster for some types of computation. I discussed this briefly in an earlier post. But there is no officially released 64bit Linux port of the Classic interface. So below I'll mention an unofficial and unsupported way to use the 64bit Linux Maple kernel with the 32bit Linux Maple Classic interface.

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