Dong Wang

Xrt can not correctly recognize the clock freq. in v2021.2

2

I am using vitis version 2021.2 with the zcu102_base_dfx platform. In the generated summary file, the clock frequency was not correctly recognized from the hardware, for example, the default clock...

Incorrect behavior of kernel events in 2021.1 on edge

3

I am upgrading from 2020.1 to 2021.1, but I have found inconsistent behavior of the xrt on the zcu102 edge device. I am testing with parallel kernels as a producer...

Incorrect results when using clEnqueueMigrateMemObjects with MIG (PL-DDR) on Zynq

4

Hi, I am working on the ZC706 board with MIG (PL-DDR) enabled in a custom vitis platform. When using clEnqueueMigrateMemObjects to write buffers, the content of the buffers on the...

Very long latency of clSetKernelArg function on embedded platforms ?

1

Hi, I am runing vitis acceleration applications on a ZCU102 boards, It was found that the operation clsetKernelArgs has very long latency. The following pic are from vitis analyzer. When...

Failed to create large buffer : vmap allocation for size XXX failed

6

Hi, I am trying to create large buffers larger than 130M, but the driver failed with the following errors:  I have set CMA=512M as follow, still can not work:...

I am using the U55c board and vitis 2022.1, I have found that the kernel launching latency is very large (50us~100us), this may cause a big differnece when using the...