gpunetio_send_wait_time_main.c

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/*
 * Copyright (c) 2022-2023 NVIDIA CORPORATION AND AFFILIATES.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are permitted
 * provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright notice, this list of
 *       conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright notice, this list of
 *       conditions and the following disclaimer in the documentation and/or other materials
 *       provided with the distribution.
 *     * Neither the name of the NVIDIA CORPORATION nor the names of its contributors may be used
 *       to endorse or promote products derived from this software without specific prior written
 *       permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TOR (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */
 
#include <doca_argp.h>
#include <doca_log.h>
 
#include "gpunetio_common.h"
 
DOCA_LOG_REGISTER(GPU_SEND_WAIT_TIME::MAIN);
 
/*
 * Get GPU PCIe address input.
 *
 * @param [in]: Command line parameter
 * @config [in]: Application configuration structure
 * @return: DOCA_SUCCESS on success and DOCA_ERROR_INVALID_VALUE otherwise
 */
static doca_error_t gpu_pci_address_callback(void *param, void *config)
{
    struct sample_send_wait_cfg *sample_cfg = (struct sample_send_wait_cfg *)config;
    char *pci_address = (char *)param;
    size_t len;
 
    len = strnlen(pci_address, DOCA_DEVINFO_PCI_ADDR_SIZE);
    if (len >= DOCA_DEVINFO_PCI_ADDR_SIZE) {
        DOCA_LOG_ERR("PCI address too long. Max %d", DOCA_DEVINFO_PCI_ADDR_SIZE - 1);
        return DOCA_ERROR_INVALID_VALUE;
    }
 
    strncpy(sample_cfg->gpu_pcie_addr, pci_address, len + 1);
 
    return DOCA_SUCCESS;
}
 
/*
 * Get NIC PCIe address input.
 *
 * @param [in]: Command line parameter
 * @config [in]: Application configuration structure
 * @return: DOCA_SUCCESS on success and DOCA_ERROR_INVALID_VALUE otherwise
 */
static doca_error_t nic_pci_address_callback(void *param, void *config)
{
    struct sample_send_wait_cfg *sample_cfg = (struct sample_send_wait_cfg *)config;
    char *pci_address = (char *)param;
    size_t len;
 
    len = strnlen(pci_address, DOCA_DEVINFO_PCI_ADDR_SIZE);
    if (len >= DOCA_DEVINFO_PCI_ADDR_SIZE) {
        DOCA_LOG_ERR("PCI address too long. Max %d", DOCA_DEVINFO_PCI_ADDR_SIZE - 1);
        return DOCA_ERROR_INVALID_VALUE;
    }
 
    strncpy(sample_cfg->nic_pcie_addr, pci_address, len + 1);
 
    return DOCA_SUCCESS;
}
 
/*
 * Get time interval input.
 *
 * @param [in]: Command line parameter
 * @config [in]: Application configuration structure
 * @return: DOCA_SUCCESS on success and DOCA_ERROR_INVALID_VALUE otherwise
 */
static doca_error_t time_interval_callback(void *param, void *config)
{
    struct sample_send_wait_cfg *sample_cfg = (struct sample_send_wait_cfg *)config;
    uint32_t time_interval_ns = *((uint32_t *)param);
 
    if (time_interval_ns == 0) {
        DOCA_LOG_ERR("Time interval can't be 0");
        return DOCA_ERROR_INVALID_VALUE;
    }
 
    sample_cfg->time_interval_ns = time_interval_ns;
 
    return DOCA_SUCCESS;
}
 
/*
 * Register sample command line parameters.
 *
 * @return: DOCA_SUCCESS on success and DOCA_ERROR otherwise
 */
static doca_error_t register_sample_params(void)
{
    doca_error_t result;
    struct doca_argp_param *gpu_param, *nic_param, *time_param;
 
    result = doca_argp_param_create(&gpu_param);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to create ARGP param: %s", doca_error_get_descr(result));
        return result;
    }
 
    doca_argp_param_set_short_name(gpu_param, "g");
    doca_argp_param_set_long_name(gpu_param, "gpu");
    doca_argp_param_set_arguments(gpu_param, "<GPU PCIe address>");
    doca_argp_param_set_description(gpu_param, "GPU PCIe address to be used by the sample");
    doca_argp_param_set_callback(gpu_param, gpu_pci_address_callback);
    doca_argp_param_set_type(gpu_param, DOCA_ARGP_TYPE_STRING);
    doca_argp_param_set_mandatory(gpu_param);
    result = doca_argp_register_param(gpu_param);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to register ARGP param: %s", doca_error_get_descr(result));
        return result;
    }
 
    result = doca_argp_param_create(&nic_param);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to create ARGP param: %s", doca_error_get_descr(result));
        return result;
    }
 
    doca_argp_param_set_short_name(nic_param, "n");
    doca_argp_param_set_long_name(nic_param, "nic");
    doca_argp_param_set_arguments(nic_param, "<NIC PCIe address>");
    doca_argp_param_set_description(nic_param, "DOCA device PCIe address used by the sample");
    doca_argp_param_set_callback(nic_param, nic_pci_address_callback);
    doca_argp_param_set_type(nic_param, DOCA_ARGP_TYPE_STRING);
    doca_argp_param_set_mandatory(nic_param);
    result = doca_argp_register_param(nic_param);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to register ARGP param: %s", doca_error_get_descr(result));
        return result;
    }
 
    result = doca_argp_param_create(&time_param);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to create ARGP param: %s", doca_error_get_descr(result));
        return result;
    }
 
    doca_argp_param_set_short_name(time_param, "t");
    doca_argp_param_set_long_name(time_param, "time");
    doca_argp_param_set_arguments(time_param, "<Nanoseconds between sends>");
    doca_argp_param_set_description(time_param, "Time interval in nanoseconds between sends");
    doca_argp_param_set_callback(time_param, time_interval_callback);
    doca_argp_param_set_type(time_param, DOCA_ARGP_TYPE_INT);
    doca_argp_param_set_mandatory(time_param);
    result = doca_argp_register_param(time_param);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to register ARGP param: %s", doca_error_get_descr(result));
        return result;
    }
 
    return DOCA_SUCCESS;
}
 
/*
 * Sample main function
 *
 * @argc [in]: command line arguments size
 * @argv [in]: array of command line arguments
 * @return: EXIT_SUCCESS on success and EXIT_FAILURE otherwise
 */
int main(int argc, char **argv)
{
    doca_error_t result;
    struct doca_log_backend *sdk_log;
    struct sample_send_wait_cfg sample_cfg;
    int exit_status = EXIT_FAILURE;
    int cuda_id;
    cudaError_t cuda_ret;
 
    /* Register a logger backend */
    result = doca_log_backend_create_standard();
    if (result != DOCA_SUCCESS)
        goto sample_exit;
 
    /* Register a logger backend for internal SDK errors and warnings */
    result = doca_log_backend_create_with_file_sdk(stderr, &sdk_log);
    if (result != DOCA_SUCCESS)
        goto sample_exit;
    result = doca_log_backend_set_sdk_level(sdk_log, DOCA_LOG_LEVEL_WARNING);
    if (result != DOCA_SUCCESS)
        goto sample_exit;
 
    DOCA_LOG_INFO("Starting the sample");
 
    result = doca_argp_init(NULL, &sample_cfg);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to init ARGP resources: %s", doca_error_get_descr(result));
        goto sample_exit;
    }
 
    result = register_sample_params();
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to parse application input: %s", doca_error_get_descr(result));
        goto argp_cleanup;
    }
 
    result = doca_argp_start(argc, argv);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("Failed to parse application input: %s", doca_error_get_descr(result));
        goto argp_cleanup;
    }
 
    /* In a multi-GPU system, ensure CUDA refers to the right GPU device */
    cuda_ret = cudaDeviceGetByPCIBusId(&cuda_id, sample_cfg.gpu_pcie_addr);
    if (cuda_ret != cudaSuccess) {
        DOCA_LOG_ERR("Invalid GPU bus id provided %s", sample_cfg.gpu_pcie_addr);
        return DOCA_ERROR_INVALID_VALUE;
    }
    cudaFree(0);
    cudaSetDevice(cuda_id);
 
    DOCA_LOG_INFO("Sample configuration:\n\tGPU %s\n\tNIC %s\n\tTimeout %dns",
              sample_cfg.gpu_pcie_addr,
              sample_cfg.nic_pcie_addr,
              sample_cfg.time_interval_ns);
 
    result = gpunetio_send_wait_time(&sample_cfg);
    if (result != DOCA_SUCCESS) {
        DOCA_LOG_ERR("gpunetio_send_wait_time() encountered an error: %s", doca_error_get_descr(result));
        goto argp_cleanup;
    }
 
    exit_status = EXIT_SUCCESS;
 
argp_cleanup:
    doca_argp_destroy();
sample_exit:
    if (exit_status == EXIT_SUCCESS)
        DOCA_LOG_INFO("Sample finished successfully");
    else
        DOCA_LOG_INFO("Sample finished with errors");
    return exit_status;
}