glx-multithread-shader-compile: 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-multithread-shader-compile - from package: piglit

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

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