orted: 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 Debian possible default full paths are:

/usr/bin/orted - from package: openmpi-bin

You may install the required package with command apt-get install {package}

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