amd_performance_monitor_api: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On CentOS possible default full paths are:

/usr/lib64/piglit/bin/amd_performance_monitor_api - from package: piglit

You may install the required package with command yum install {package}

Error in other languages:
amd_performance_monitor_api: bevel nie gevind nie
amd_performance_monitor_api: comandă negăsită
amd_performance_monitor_api: comando não encontrado
amd_performance_monitor_api: commande introuvable
amd_performance_monitor_api: command not found
amd_performance_monitor_api: käsku ei ole
amd_performance_monitor_api: không tìm thấy lệnh
amd_performance_monitor_api: komanda nerasta
amd_performance_monitor_api: Kommando nicht gefunden.
amd_performance_monitor_api: kommandot finns inte
amd_performance_monitor_api: komut yok
amd_performance_monitor_api: nie znaleziono polecenia
amd_performance_monitor_api: níor aimsíodh an t-ordú
amd_performance_monitor_api: no se encontró la orden
amd_performance_monitor_api: no s'ha trobat l'ordre
amd_performance_monitor_api: opdracht niet gevonden
amd_performance_monitor_api: parancs nem található
amd_performance_monitor_api: perintah tidak ditemukan
amd_performance_monitor_api: príkaz nenájdený
amd_performance_monitor_api: příkaz nenalezen
amd_performance_monitor_api: команда не найдена
amd_performance_monitor_api: командата не е открита
amd_performance_monitor_api: 命令找不到
amd_performance_monitor_api: コマンドが見つかりません