smpif2c: 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
/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/smpif2c - from package: libsimgrid-dev

You may install the required package with command apt-get install {package}
Error in other languages:
smpif2c: bevel nie gevind nie
smpif2c: comandă negăsită
smpif2c: comando não encontrado
smpif2c: commande introuvable
smpif2c: command not found
smpif2c: käsku ei ole
smpif2c: không tìm thấy lệnh
smpif2c: komanda nerasta
smpif2c: Kommando nicht gefunden.
smpif2c: kommandot finns inte
smpif2c: komut yok
smpif2c: nie znaleziono polecenia
smpif2c: níor aimsíodh an t-ordú
smpif2c: no se encontró la orden
smpif2c: no s'ha trobat l'ordre
smpif2c: opdracht niet gevonden
smpif2c: parancs nem található
smpif2c: perintah tidak ditemukan
smpif2c: príkaz nenájdený
smpif2c: příkaz nenalezen
smpif2c: команда не найдена
smpif2c: командата не е открита
smpif2c: 命令找不到
smpif2c: コマンドが見つかりません