What POSIX system call can be used instead of forkall() on Solaris 10?
It is possible to use forkall on Solaris 10, but how I can determine OS and OS version in preprocessor?
Forall is not a POSIX system call. Its only available to solaris. It does not have any alternavite in POSIX. You should try to write portable code.
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When I run MDART routing protocol tcl script in NS 2.35, it says:
When configured, ns found the right version of tclsh in /usr/bin/tclsh8.6
but it doesn't seem to be there anymore, so ns will fall back on running the first tclsh in your path. The wrong version of tclsh may break the test suites. Reconfigure and rebuild ns if this is a problem.
num_nodes is set 16
INITIALIZE THE LIST xListHead
channel.cc:sendUp - Calc highestAntennaZ_ and distCST_
highestAntennaZ_ = 1.5, distCST_ = 179769313486231570814527423731704356798070567525844996598917476803157260780028538760589558632766878171540458953514382464234321326889464182768467546703537516986049910576551282076245490090389328944075868508455133942304583236903222948165808559332123348274797826204144723168738177180919299881250404026184124858368.0
SORTING LISTS ...DONE!
Segmentation fault (core dumped)
And the simulation end time supposely end at 205s but when run the animation, the simulation end at 8s. Why is that? Thanks
ns found the right version of tclsh in /usr/bin/tclsh8.6
but it doesn't seem to be there anymore
tcl8.6 : You are supposed to use the "ns-2.35 tcl8.5.10" : It doesn't change version or location. (Unless you move ns-allinone-2.35). The external tcl8.6 can change with e.g. an update. And later versions tend to be missing some files, e.g. in Debian / Ubuntu.
Example https://drive.google.com/file/d/0B7S255p3kFXNVVlxR0ZNRGVORjQ/view?usp=sharing
$ tar xvf ns-allinone-2.35_gcc5.tar.gz ## 2014 - 2017 update
$ cd ns-allinone-2.35/
$ export CC=gcc-4.8 CXX=g++-4.8 && ./install
Segmentation fault
MDART cannot be used with a contemporary OS. The latest that worked was an Ubuntu 18.04.4 updated 16 months ago. Please see my tests https://drive.google.com/drive/folders/1si2jA3lc-23lubVHb3tFbIAXfnhRfg5O?usp=sharing ..... CentOS 8 fails, Ubuntu 20.04 fails. Etc. "2021 OS" fails.
EDIT : Further tests revealed that an updated Ubuntu 18.04 failed : The latest Ubuntu version for MDART is 16.04 .
NOTE 1: The Ubuntu 16.04 nam package is corrupt. Please use https://drive.google.com/file/d/0B7S255p3kFXNdmxzSmRzaVRWb28/view?usp=sharing → nam_1.15-10-ubuntu14_amd64.deb
NOTE 2: The Ubuntu 16.04 ns command : sudo apt install ns2
NOTE 3: Building ns-allinone-2.35/ → Four cases of random Tk errors after the latest Ubuntu updates. Possible solutions: Use ns-allinone-2.35_2021.tar.xz https://drive.google.com/file/d/167cP7hPnJGiNL3rK4Mxnh_-0t7_S8FTL/view?usp=sharing with Tcl, Tk updated to version 8.5.17 .... And there are three options for extra gcc/g++ compilers to try out https://drive.google.com/drive/folders/1xVEATaYAwqvseBzYxKDzJoZ4-Hc_XOJm?usp=sharing
export CC=gcc447 CXX=g++447 && ./install ## can also be used with ns-allinone-2.35 version 2011
export CC=gcc48 CXX=g++48 && ./install
export CC=gcc54 CXX=g++54 && ./install
Simulation time : The setting is maximum time. Example : The setting set val(end) 1006.0 will run about 6 seconds and end the output text with : 1000 simulation seconds ....... Time is relative. ns2 was developed in the 90th when processors were very slow Pentium 1 / Pentium 2 . ... And different protocols behave different with simulation time.
Our shop just upgraded to Matlab 2019a, and I'm bumbling around the import of MySQL/MariaDB data (*.frm files). I found myself to the sqlread tutorial. I have yet to fully plumb the machinations behind the database command to set up a connection, but in messing around, I seem to have discovered that I don't have an sqlread function. This is odd, as I have the Database Toolbox:
>> ver
-----------------------------------------------------------------------------------------------------
MATLAB Version: 9.6.0.1072779 (R2019a)
MATLAB License Number: ______
Operating System: Microsoft Windows 7 Enterprise Version 6.1 (Build 7601: Service Pack 1)
Java Version: Java 1.8.0_181-b13 with Oracle Corporation Java HotSpot(TM) 64-Bit Server VM mixed mode
-----------------------------------------------------------------------------------------------------
MATLAB Version 9.6 (R2019a)
Database Toolbox Version 9.1 (R2019a)
<...snip...>
>> help sqlread
--- sqlread not found. Showing help for stlread instead. ---
<...snip...>
>> which database
C:\Program Files\MATLAB\R2019a\toolbox\database\database\database.m
>> which sqlread
'sqlread' not found.
Why would this not be available?
TMW investigated and reported that sqlread becomes available after setting up a data source.
Unfortunately, the next road block that I'm confronting is setting up the data source.
My question about a simpler alternative to import MySQL data into Matlab still stands.
Thanks.
I'm little bit new with tensor-flow.. so please be gentle with me..
I have problem with creating second process that load tensorflow on already working GPU.
the error I get is:
\cuda\cuda_dnn.cc:385] could not create cudnn handle: CUDNN_STATUS_NOT_INITIALIZED
\cuda\cuda_dnn.cc:392] error retrieving driver version: Permission denied: could not open driver version path for reading: /proc/driver/nvidia/version
\cuda\cuda_dnn.cc:352] could not destroy cudnn handle: CUDNN_STATUS_BAD_PARAM
\kernels\conv_ops.cc:532] Check failed: stream->parent()->GetConvolveAlgorithms(&algorithms)
\cuda\cuda_dnn.cc:385] could not create cudnn handle: CUDNN_STATUS_NOT_INITIALIZED
Hardware details :
super micro - 4028GR-TRT
8 GPU's 1080
CUDA: 8
cudnn: 5.1
windows: 10
tensorflow: 0.12.1 / 1.0.1
My PC shouldn't be a problem
windows 7
gpu 1070
cuda 8
cudnn 5.1
tensorflow 0.12.1
Can someone tell me why on my PC everything is ok but not on the big one(supermicro)?
is this windows / driver issues maybe?
I try to update NVIDIA driver.. no help on that ..
TensorFlow is not always good at sharing GPUs with other processes (including other instances of itself!). The typical workaround is to use the %CUDA_VISIBLE_DEVICES% environment variable to prevent the two processes from clashing over the same GPU. For example:
C:\>set CUDA_VISIBLE_DEVICES=0
C:\>python tensorflow_program_1.py
While in another command prompt you could tell TensorFlow to use a different GPU as follows:
C:\>set CUDA_VISIBLE_DEVICES=1
C:\>python tensorflow_program_2.py
I want to force chrome to render WebGL using software drivers, not hardware.
I'm using Ubuntu Linux and I understand that the Mesa GL drivers can be forced to use a software implementation by specifying the environment variable, LIBGL_ALWAYS_SOFTWARE=1, when launching a program. I confirmed that the driver changes when specifying the env var.
bash$ glxinfo | grep -i "opengl"
OpenGL vendor string: Intel Open Source Technology Center
OpenGL renderer string: Mesa DRI Intel(R) 945GM x86/MMX/SSE2
OpenGL version string: 1.4 Mesa 10.1.3
OpenGL extensions:
bash$ LIBGL_ALWAYS_SOFTWARE=1 glxinfo | grep -i "opengl"
OpenGL vendor string: VMware, Inc.
OpenGL renderer string: Gallium 0.4 on llvmpipe (LLVM 3.4, 128 bits)
OpenGL version string: 2.1 Mesa 10.1.3
OpenGL shading language version string: 1.30
OpenGL extensions:
The default GL driver provides OpenGL 1.4 support, and the software driver provides OpenGL 2.1 support.
I tracked down where the desktop launcher exists (/usr/share/applications/) and edited it to specify the env var, but chrome://gpu still shows GL version 1.4. The Chrome GPU info contains a promising value:
Command Line Args --flag-switches-begin --disable-accelerated-2d-canvas --ignore-gpu-blacklist --flag-switches-end
I wonder if I can customize the --flag-switches-begin.
I also found the '--use-gl' command line switch, but I'm not sure how to leverage it to force the driver into software mode.
As a side note, I have already enabled 'Override software rendering list' in chrome://flags/, which did remove my model from the 'blacklist' making it possible to use WebGL, but the OpenGL feature set is still quite limited.
I have an old laptop with a terrible 'gpu' that I would like to use to develop some shaders and test in WebGL, no matter the performance.
Is it possible to tell Chrome to use the software drivers?
I don't have a linux box so I can't check but you can specify a prefix chrome will use for launching the GPU process with
--gpu-launcher=<prefix>
It's normally used for debugging for example
--gpu-launcher="xterm -e gdb --args"
When chrome launches a process it calls spawn. Normally it just launches
path/to/chrome <various flags>
--gpu-launcher lets you add a prefix to that. So for example
--gpu-launcher=/usr/local/yourname/launch.sh
would make it spawn
/usr/local/yourname/launch.sh path/to/chrome <various flags>
You can now make /usr/local/yourname/launch.sh do whatever you want and finally launch chrome. The simplest would be something like
#!/bin/sh
"$#"
In your case I'd guess you'd want
#!/bin/sh
export LIBGL_ALWAYS_SOFTWARE=1
"$#"
Be sure to mark launch.sh as executable.
given the script above this worked for me
/opt/google/chrome/chrome --ignore-gpu-blacklist --gpu-launcher=/usr/local/gman/launch.sh
after which about:gpu gives me
GL_VENDOR VMware, Inc.
GL_RENDERER Gallium 0.4 on llvmpipe (LLVM 0x301)
GL_VERSION 2.1 Mesa 9.0.3
I would like to have the SQL Server PowerShell extensions available to me whenever I start PowerShell by loading the snap-ins in my profile.ps1 script. I found an article here with a script example that shows how to do this, and this works fine on my 32-bit Windows XP box.
Unfortunately, on my 64-bit Windows 7 machine, this blows up. If I try to launch this script with the 64-bit PowerShell, I get:
Add-PSSnapin : No snap-ins have been registered for Windows PowerShell version 2.
At C:\Users\xxxx\Documents\WindowsPowerShell\profile.ps1:84 char:13
+ Add-PSSnapin <<<< SqlServerCmdletSnapin100
+ CategoryInfo : InvalidArgument: (SqlServerCmdletSnapin100:String
[Add-PSSnapin], PSArgumentException
+ FullyQualifiedErrorId : AddPSSnapInRead,Microsoft.PowerShell.Commands.AddPSSnapinCommand
If I run this instead in a 32-bit PowerShell, I get:
Get-ItemProperty : Cannot find path 'HKLM:\SOFTWARE\Microsoft\PowerShell\1\ShellIds \Microsoft.SqlServer.Management.PowerShell.sqlps' because it does not exist.
At C:\Users\xxxx\Documents\WindowsPowerShell\profile.ps1:39 char:29
+ $item = Get-ItemProperty <<<< $sqlpsreg
+ CategoryInfo : ObjectNotFound: (HKLM:\SOFTWARE\...owerShell.sqlps:String) [Get-ItemProperty], ItemNotFoundException
+ FullyQualifiedErrorId : PathNotFound,Microsoft.PowerShell.Commands.GetItemPropertyCommand
I'd like to be able to run this in a 64-bit PowerShell if possible. To this end, I tracked down what I thought was the Powershell extension dlls and in a 64-bit Administrator elevated PowerShell I ran:
cd "C:\Program Files (x86)\Microsoft SQL Server\100\Tools\Binn"
installutil Microsoft.SqlServer.Management.PSProvider.dll
installutil Microsoft.SqlServer.Management.PSSnapins.dll
No dice. Although installutil seemed to indicate success, I still get the "No snap-ins have been registered for Windows PowerShell version 2" error message when I run the script.
Anyone have any suggestions as to where I go from here?
I've used this script without issue on x64 machines. The problem with the x86 invocation is that the script looks for registry keys which on an x64 instance are only accessible from x64 PowerShell. For the x64 invocation you could try registering the snapins since that is the error message you're receiving. Run as administrator...
Change this:
cd $sqlpsPath
Add-PSSnapin SqlServerCmdletSnapin100
Add-PSSnapin SqlServerProviderSnapin100
to this:
cd $sqlpsPath
$framework=$([System.Runtime.InteropServices.RuntimeEnvironment]::GetRuntimeDirectory())
Set-Alias installutil "$($framework)installutil.exe"
installutil Microsoft.SqlServer.Management.PSSnapins.dll
installutil Microsoft.SqlServer.Management.PSProvider.dll
Add-PSSnapin SqlServerCmdletSnapin100
Add-PSSnapin SqlServerProviderSnapin100
An even better solution is not use add-pssnapin instead turn sqlps into a module. I have blog post here:
http://sev17.com/2010/07/10/making-a-sqlps-module
Update for SQL Server 2012 - now ships a sqlps module you can install instead of the above blog: http://www.microsoft.com/en-us/download/details.aspx?id=35580
I realise this is a bit of an older question but with a stock standard Windows and SQL Server 2012 install you can just directly use the command Invoke-Sqlcmd without loading anything beforehand as it will auto import the sqlps module. However letting it do that will often cause issues so import the module yourself with the lines below in the same place in your code as you used to use the add-pssnapin commands
$cur = Get-Location
Import-Module 'sqlps' –DisableNameChecking
Set-Location $cur
Similar to that posted on this MS web forum.
The import-module line above changes the current path to something that makes UNC path strings like "\\server\share\path\filename.ext" not work with lots of cmd-lets. So we store the current path before and change it back after the import-module command.
It's possible the snapin assemblies are compiled for x86 only due to dependencies on native 32bit SMO COM objects. If it was possible to run them in a 64bit shell, I'm pretty sure MS would have shipped both x86 and x64 management shells.