Hi,
I have some OpenCL code which is happily running on my Nexus 5 while using GPU (CL_DEVICE_TYPE_GPU). However, when I attempted to run this code on the CPU for comparison, I hit a brick wall. It turns out that libllvm-arm.so is missing and therefore OpenCL runtime is not able to compile.
Does anyone know where I can find libllvm-arm.so for Snapdragon 800?
Thanks in advance.
Piotr
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Are you using the devloper preview driver from here to enable OpenCL on your Nexus 5?
Yes, these are the drivers I use. libllvm-arm.so is not includeed. Wonder if this is intended or just an oversight.
Hi,
I use OpenCL on my Nexus 5, here's how you can do:
Download this:
https://developer.qualcomm.com/download/adreno200-nexus-kot49h.zip
The Nexus 5 didn't come with a OpenCL support, only OpenGL.
Do all the step in the READ me, except the installation of the KitKat Android.
Here's some issue you can find and how to resolve them:
1. Installing TWRP 2.7
It said to load into fastboot mode, installing the img using fastboot command and reboot in normal mode to let TWRP installing correctly.
Don't reboot, when you send the command (fastboot flash...) start immediatly in recovery mode.
2. (No command.) screen on recovery mode
Resend the .img using fastboot and boot again in recovery mode.
3. Cannot send adb sideload command.
While TWRP shows up, your computer rarely understand it's a ADB android stuff, you need to change the driver to use the Google USB: Android ADB interface.
While all the step are done, you only need the libOpenCL.so (The one in the patch, check inside the zip) in your Android project and it will link to llvm and other sub libs.
Jay
Thanks Jason.
I admit I did not follow the README file as I wanted to test in an environment as close to production one as possible. And this means I will have to distribute the libs along with my app (most likely) and there will be no option to carry out steps as described in the README.
The only difference between just copying libs to my test device vs following all the steps in the README I can think of is that I did not copy the firmware files (nor install them in any way). I will try to copy them onto the device and see if this makes any difference.
Piotr