MYTID(3PVM)

💖 MYTID(3PVM) — aka pvm_mytid 💖

okay bestie, welcome to the PVM Version 3.4 manual, the one and only 🌸 this page is literally all about pvm_mytid, the lil function that hands you back your own task id. it's giving "who am I" but make it distributed computing. no cap.

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✨ NAME ✨

pvm_mytid — returns the tid of the calling process. that's it. that's the whole job. iconic. 👑

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🫶 SYNOPSIS 🫶

C bestie:

int tid = pvm_mytid( void )

Fortran bestie:

call pvmfmytid( tid )

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🎀 PARAMETERS 🎀

• tid — an Integer that returns the task identifier of the calling PVM process. and listen: values less than zero mean an error, okay? if you see a negative number, something went 💀, do not pass go.

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🌈 DESCRIPTION 🌈

so here's the tea ☕ The routine pvm_mytid enrolls this process into PVM on its first call. it also generates a unique tid if this process was not created by pvm_spawn. and pvm_mytid returns the tid of the calling process, and you can call it multiple times in an application — she's flexible like that, periodt. 💅

and lowkey the important part: any PVM system call (not just pvm_mytid) will enroll a task in PVM if the task is not enrolled before the call. so like, if you were stressing about doing it manually, bestie, you didn't have to. 🙈

now the tid itself. she's a 32 bit positive integer created by the local pvmd. the 32 bits are divided into fields that encode various information about this process such as:

• its location in the virtual machine (i.e. local pvmd address),
• the CPU number in the case where the process is on a multiprocessor,
• and a process ID field.

This information is used by PVM and is not expected to be used by applications. so please, bestie, do not be out here trying to read the vibes off the bits. Applications should not attempt to predict or interpret the tid with the exception of calling tidtohost(). that's the one exception, and it's the only one, iykyk. 🧚

If PVM has not been started before an application calls pvm_mytid the returned tid will be < 0. big yikes energy. start PVM first, babe.

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⭐ EXAMPLES ⭐

C:

tid = pvm_mytid( );

Fortran:

CALL PVMFMYTID( TID )

look at her go. ate. 🔥

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💀 ERRORS 💀

This error condition can be returned by pvm_mytid:

• PvmSysErr — pvmd not responding. (ghosted by the daemon. devastating. 😭)

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💜 SEE ALSO 💜

• pvm_tidtohost(3PVM)
• pvm_parent(3PVM)

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and that's the page, bestie! go forth and know thyself, tid-wise. 🦋

this was PVM Version 3.4, and this page is dated 30 August, 1993 — yeah she's an elder but she still slays. ✨🌸💅