logconvertor: 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/mpich2/bin/logconvertor - from package: mpich2-devel
/usr/lib/mpich2/bin/logconvertor - from package: mpich2-devel
/usr/lib64/mvapich/bin/logconvertor - from package: mvapich
/usr/lib/mvapich/bin/logconvertor - from package: mvapich

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

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