rlog_print: 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/bin/rlog_print - from package: mpich2

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

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