First step in pinpointing illegal memory accesses in CUDA asynchronous memory transfers:
#ifdef DEBUG
#define cudaMemcpyAsync(D, S, N, T, STR) \
(cudaMemcpy((D), (S), (N), (T)))
#endif
^self life asString
Saturday, October 4, 2014
Wednesday, July 16, 2014
NTFS Write Support on OSX with ntfs-3g
- Install ntfs-3g using your favorite package manager
- Replace the mount command as described here or here (tl;dr of the first link).
- At this point, when plugging in an NTFS formatted disk, Mavericks will complain that the fuse kernel extension is unsigned. Create a self-signed certificate.
- Sign the fuse kernel extension with that certificate: sudo codesign -s "NameOfTheSelfSignedCertificate" -f /opt/local/Library/Filesystems/osxfusefs.fs/Support/osxfusefs.kext (or whereever that kext resides).
Friday, April 25, 2014
PDF annotations vs LaTeX
Protip: PDF annotations do not show when including the PDF file in a LaTeX document using \includegraphics. My workaround is to annotate the PDF in question (e. g. in Apple's Preview.app) and then "Export as PDF..." from Preview.app. This causes the annotations to become part of the real document.
In case anybody was wondering why you would export a PDF as PDF.
In case anybody was wondering why you would export a PDF as PDF.
Sunday, August 11, 2013
Tuesday, May 28, 2013
Expressiveness (2)
Transposing a matrix in Clojure:
(from http://stackoverflow.com/a/10347404/1144274)
(defn transpose [m]
(apply mapv vector m))
(from http://stackoverflow.com/a/10347404/1144274)
Tuesday, April 9, 2013
Remote VisualVM
In my current project at work, I need to do some profiling on a Java app that runs on a server. Hooking it up to my local VisualVM (awesome tool, btw) was not immediately obvious to me, so here's the steps:
Prepare application on remote server
jstatd needs some security settings explained in [1]. Open vim, enter
grant codebase "file:${java.home}/../lib/tools.jar" {
permission java.security.AllPermission;
};
and save as jstatd.all.policy.
Now start jstatd in the same directory, let in run in the background:
jstatd -J-Djava.security.policy=jstatd.all.policy &
Next, start the app (assuming $MY_APP is the main class) as described in [2]:
java \
-Dcom.sun.management.jmxremote \
-Dcom.sun.management.jmxremote.port=$JMX_PORT \
-Dcom.sun.management.jmxremote.ssl=false \
-Dcom.sun.management.jmxremote.authenticate=false \
-Djava.rmi.server.hostname=$EXTERNAL_IP \
$MY_APP
$JMX_PORT can be any available TCP port. $EXTERNAL_IP is the server's external IP address.
Make sure that the server's firewall allows incoming connections on both TCP 1099 (jstatd) and the port you chose as $JMX_PORT.
Connect VisualVM
Start VisualVM, double click on remote. Enter the server's external IP address:
Right-click on the new connection and add a JMX connection:
Enter $EXTERNAL_IP:$JMX_PORT from above, in my case 192.168.0.160:
This should add a connection to the running app:
Double-click on it, start profiling, enjoy.
References
Sunday, February 24, 2013
Tool Time
In this post I'll collect little things that make life easier.
Shell
https://github.com/robbyrussell/oh-my-zsh
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