IOPS Test

This is simple test design to measure Input/Output Operations per second. In this design, a simple kernel is enqueued many times and measuring overall IOPS.

KEY CONCEPTS: Input/Output Operations per second

KEYWORDS: CL_QUEUE_OUT_OF_ORDER_EXEC_MODE_ENABLE

This is simple test design to measure Input/Output Operations per second. In this design, a simple kernel is enqueued many times and measuring overall IOPS.

For measuring the IOPS we do kernel enqueue 1 Million times and capture the time it takes to complete -

std::chrono::high_resolution_clock::time_point TimeStart =
    std::chrono::high_resolution_clock::now();
for (unsigned int i = 0; i < iter; i++) {
  OCL_CHECK(err, err = q.enqueueTask(hello));
}
q.finish();
std::chrono::high_resolution_clock::time_point TimeEnd =
    std::chrono::high_resolution_clock::now();
double duration =
    std::chrono::duration_cast<std::chrono::microseconds>(TimeEnd - TimeStart)
       .count();

Following is the real log reported while running the design on U250 platform:

Loading: './build_dir.hw.xilinx_u250_gen3x16_xdma_3_1_202020_1/hello.xclbin'
Trying to program device[0]: xilinx_u250_gen3x16_xdma_shell_3_1
Device[0]: program successful!
Commands:      10 iops: 42553.2
Commands:      50 iops: 62972.3
Commands:     100 iops: 66093.9
Commands:     200 iops: 65104.2
Commands:     500 iops: 65634
Commands:    1000 iops: 68832.6
Commands:    1500 iops: 70297.1
Commands:    2000 iops: 71495
Commands:    3000 iops: 72982
Commands:    5000 iops: 75482
Commands:   10000 iops: 75937.6
Commands:   50000 iops: 86605
Commands:  100000 iops: 90265.6
Commands:  500000 iops: 89432
Commands: 1000000 iops: 89306.1
TEST PASSED

EXCLUDED PLATFORMS:

• All NoDMA Platforms, i.e u50 nodma etc

DESIGN FILES

Application code is located in the src directory. Accelerator binary files will be compiled to the xclbin directory. The xclbin directory is required by the Makefile and its contents will be filled during compilation. A listing of all the files in this example is shown below

src/hello.cpp
src/host.cpp

Access these files in the github repo by clicking here.

COMMAND LINE ARGUMENTS

Once the environment has been configured, the application can be executed by

./iops_test <hello XCLBIN>