Mali-G715-Immortalis MC11 r1p2 slower than mali G72 MC24

Hi,

I got new xiaomi 13T pro with Mali-G715-Immortalis MC11 r1p2 and méditek 9200+.

And the speed of my program is 20% less than on my old hauwei honnor play with mali G72 MC24.

I added

#pragma OPENCL EXTENSION cl_khr_priority_hints : enable


And this improved the speed from 140ms to 110 ms but still superior to the 80ms of the hauwei.

Does using CL_Buffer with Mali-G715 could drop the speed.
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  • Thanks for the information but i already try to contact xiaomi by mail concerning opencl. But after that,  my e-mail was refused to create account. But they said that they do not have information about it. Xiaomi is just an integrator not a chip producer like hauwei. They may not even know that opoencl exist ;))

    Yes i spend nearly 2 months on the xiaomi problem, not full time of course, but thinking about the possible problem until i found it. ;))

    But i think that i anderstoud why OpenCL is a problem for OEM. It use a lot of batterieand produce a lot of heat when running it with CPU multithreading. When openGL is not so consumer of batterie and heat.

    Yes i it quite frustrating that OpenCL is so different from one OEM to another and we cannot find so much help from any OEM.

    But i noticed that OpenCL performance is related with the number of core on the GPU. So G72 with 24 core should be faster than G715 with 11 core. I may be wrong but that what i think.

    The only imprvment i could see for openCL would be to be able to compute group in order not in aléatoir. that would be great we could do processing that need to be done with the CPU. But may be in the futur ;)).

    PS. concerning the xiaomi. It look like they use 64bit like two 32bit for GPU and CPU driver command. That is may be why 64bit use all the core and 32bit compilation only 4 core. On the hauweil i found out that 64bit or 32 bit give the same result, and that 32bit is a little bit faster than 64bit. I did not anderstoud why 64bit use all the core and that 32bit only 4 core. MAys be someone could explain it.

    regards.

Reply
  • Thanks for the information but i already try to contact xiaomi by mail concerning opencl. But after that,  my e-mail was refused to create account. But they said that they do not have information about it. Xiaomi is just an integrator not a chip producer like hauwei. They may not even know that opoencl exist ;))

    Yes i spend nearly 2 months on the xiaomi problem, not full time of course, but thinking about the possible problem until i found it. ;))

    But i think that i anderstoud why OpenCL is a problem for OEM. It use a lot of batterieand produce a lot of heat when running it with CPU multithreading. When openGL is not so consumer of batterie and heat.

    Yes i it quite frustrating that OpenCL is so different from one OEM to another and we cannot find so much help from any OEM.

    But i noticed that OpenCL performance is related with the number of core on the GPU. So G72 with 24 core should be faster than G715 with 11 core. I may be wrong but that what i think.

    The only imprvment i could see for openCL would be to be able to compute group in order not in aléatoir. that would be great we could do processing that need to be done with the CPU. But may be in the futur ;)).

    PS. concerning the xiaomi. It look like they use 64bit like two 32bit for GPU and CPU driver command. That is may be why 64bit use all the core and 32bit compilation only 4 core. On the hauweil i found out that 64bit or 32 bit give the same result, and that 32bit is a little bit faster than 64bit. I did not anderstoud why 64bit use all the core and that 32bit only 4 core. MAys be someone could explain it.

    regards.

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