Hello.
Does L2 cache data invalidated after finishing each kernel invocation? If not the case, does invalidation depends on memory type (SVM, old buffers, mapped old buffers, etc)?
Question related to Bifrost and Valhall architectures.
Hello.
Does L2 cache data invalidated after finishing each kernel invocation? If not the case, does invalidation depends on memory type (SVM, old buffers, mapped old buffers, etc)?
Question related to Bifrost and Valhall architectures.
Hi, Is there some difference between clEnqueueSVMMap for coarse SVM and clEnqueueMapBuffer in theory? If there is, will this cause difference about performance?
Hi. According to Arm Mali GPU Datasheet 2020.pdf document there are several modes for maximum thread count, for Mali G76 it is 2 such modes, 768 threads for 0-32 work registers, and 384 for 33-64 work registers.
Is it possible that register spilling can…
Hi,
I am doing an image crop and writing to the destination. I am using a vector load and store of 8 uchar's. can someone help in optimizing this kernel . any mali G-72 gpu specific changes required?
uchar* src_y : source pointer to Y data of the…
Hi,
I am working on a video solution code. where I have to provide source image to GPU and do computation and write in the destination. I read that using buffer creates in the loop every time will add GPU overhead.so, I implemented the following. but…
I wan to build OpenCL 2.0 kernel (it uses OpenCL C 2.0 language in kernel code) using malioc (Mali Offline Compiler) .
Here is my command line:
malioc --name TestKernel --core Mali-G76 kernels.cl
In my kernel code I check value of __OPENCL_VERSION__ and it…
When we create physical zero copy buffers using cl_arm_import_memory, do we really need to perform map/unmap operations everytime we make changes to the buffer from the CPU side. Since, both GPU and CPU access the same memory, will not the changes propagate…
I wish to implement an optimised sgemm for Mali MidGard Gpu whichas of now only support OpenCL 1.2. As far as I know, OpenCL 1.2 doesn't support subgroup extensions and Mali GPUs don't have any benefits for local memory tiling. So What should be the best…
So, I am trying to perform some operation inside an OpenCL kernel. I have this buffer named filter which is a 3x3 matrix initialized with value 1.
I pass this as an argument to the OpenCL kernel from the host side. The issue is when I try to fetch this…
I am trying to allocate a zero copy buffer on Mali Midgard GPUs . The OpenCL 1.2 guide mentions that the only sure shot way to do this is to use the flag
CL_MEM_ALLOC_HOST_PTR
SO, First we need to allocate the Gpu memory using the flag and then perform…
Hello,
Since lack of local memory in Mali, I am trying to use subgroups as Intel does in clDNN library, although they have local memory but registers exchange even faster than local memory. I have three questions about subgroups in Bifrost and Valhall implementation…
Hi,all
I am now based on MediaTek's Helio X20 development Opencl algorithm, but it is not clear that the specific structure of the X20 mali-T880, including the number of shadercore, the size of the L1 cach, L2 cach size, etc.. Can you provide specific…
Here's a link to a blog post from today about my work on accelerating SQLite with OpenCL on the ARM based Samsung Chromebook with a Mali T604.
Details & Early Benchmarks of OpenCL accelerated SQLite on ARM Mali | Tom Gall
Comments, questions and…
What is the best way to learn coding for mali t760?
I saw another post mentioning the Samsung Chromebook 2 on this forum but I thought I'd ask the question outright. Are there any or will there be any plans for ARM to release OpenGL ES and Open CL drivers for HW accel support on the new Samsung Chromebook…
For Mali T604 and T628, peak performance is 17 FP32 FLOPS per ALU per cycle.http://malideveloper.arm.com/downloads/OpenCL_FAQ.pdf shows this is compsed of:
And also…
Is it possible to debug native Android application using Mali graphics Debugger?
I have confirmed that debugging is working properly with Android Java applications, but with native C++ application (built using NDK toolchain) - debugger does not capture…
Dear All,
Hi, I have few questions about linux on samsung chromebook
I followed all the instructions then successfully generated SD image and then installed x11 using script.
But when I start x11 windowing system, it only shows me one terminal frame…
Dear All,
I want to say really thanks for everyone. Because when I have a question, always this forum give me a precious answer
Cut to the chase, I am wondering whether I can measure the power performance of Mali GPU based on Samsung Chromebook 2.
Or any…
Hi,
Is there any way to speed the data copying from CPU buffers which are allocated using "malloc" to GPU accessible memory. currently I am using simple memcpy for copying data.
Thanks & Regards,
Narendra Kumar Chepuri.