Technology Errors

oclHashcat64.bin: /usr/lib64/libOpenCL.so: no version information available (required by ./oclHashcat64.bin)

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I have been working on a project using oclHashcat this afternoon and started to look into an error that has existed on a development server where we use oclHashcat for quite some time. After some digging around I am confident that regardless of the error existing there is not an issue but I wanted to post an article related to the error in case anyone else looked for a resolution to the error. Below is information on the libOpenCL.so error and my thoughts regarding the error.

Technology Errors

CentOS Linux: ATI Stream Compile Error: GL/glu.h: No such file or directory

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Today I was doing some testing with OpenCL and needed to install ATI Stream for one of the tests I was performing but I ran into an error during the compile process. The error related to glu.h which was not found during the compile process using make. Below I describe the error in more detail as well as what was done to resolve the error and make the glu.h file available on the server.

Technology Errors

CentOS IRQ Errors, Server: kernel: Disabling IRQ #177

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Recently we have been doing a lot of testing of oclHashcat on CentOS Linux servers. The oclHashcat application takes advantage of the GPU’s, or Graphical Processing Units, of Nvidia graphics cards or ATI graphics cards. Anyhow one of the servers we have been testing with has four Nvidia 295 GTX’s and at times was receiving an error stating the kernel was disabling the IRQ. Below we describe the error in more detail along with a kernel parameter that was added to resolve the error. Even though we experienced this issue with oclHashcat specifically the error could happen with other applications and/or Linux Operating Systems so the resolution could be the same.

Technology Errors

RPMForge: Could not retrieve mirrorlist http://apt.sw.be/redhat/el5/en/mirrors-rpmforge error was [Errno 12] Timeout: urlopen error timed out

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Earlier today I was having trouble on one of my development servers reaching the RPMForge repository which I use on CentOS Linux servers. I believe the issue to be some form of odd network issues either at the development servers location, on the repos end, or somewhere in between. Regardless of the issue at hand there is a work around that can be used which is described in more detail below.

Technology Errors

Firefox Won’t Open On Windows 7 Ultimate 64-Bit, Firefox Won’t Launch In Safe Mode

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I use multiple browsers on a daily basis either because some sites work better in some browsers versus others or to test web applications, etc. Typically I prefer Chrome over any other browser but sometimes I use Firefox because of some of the plugins available. Sometime in the past the Firefox installation on my Windows 7 Ultimate 64-bit laptop became corrupted so when I attempted to launch Firefox it would flash for a moment in the taskbar and then close immediately. The Firefox window would never display on the screen or even attempt to display on the screen however you could see the process for a moment in the Windows Task Manager as shown in the below image.