arb_compute_shader-work_group_size_too_large: 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/arb_compute_shader-work_group_size_too_large - from package: piglit

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

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