smpswriter: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH

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/mp/bin/smpswriter - from package: mp
/usr/lib/mp/bin/smpswriter - from package: mp

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