glx-create-context-invalid-reset-strategy: 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/glx-create-context-invalid-reset-strategy - from package: piglit

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

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