bum


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bum

(1)
To make highly efficient, either in time or space, often at the expense of clarity. "I managed to bum three more instructions out of that code." "I spent half the night bumming the interrupt code." In elder days, John McCarthy (inventor of Lisp) used to compare some efficiency-obsessed hackers among his students to "ski bums"; thus, optimisation became "program bumming", and eventually just "bumming".

bum

(2)
To squeeze out excess; to remove something in order to improve whatever it was removed from (without changing function; this distinguishes the process from a featurectomy).

bum

(3)
A small change to an algorithm, program, or hardware device to make it more efficient. "This hardware bum makes the jump instruction faster."

Usage: now uncommon, largely superseded by v. tune (and tweak, hack), though none of these exactly capture sense

bum

(4)
All these uses are rare in Commonwealth hackish, because in the parent dialects of English "bum" is a rude synonym for "buttocks".
References in periodicals archive ?
The Sun Bum also has the Browning Lotion, a mositurizing lotion that accelerates the tanning process to get you that deep tan fast.
Instead I bought a man-bag that was worn on a strap from the shoulder and the bum bag was consigned to history.
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Hope there are plenty of bums on seats and no bum notes, etc.
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But Ling's Cars owner Ling Valentine has hit back on social media, saying a BMW bum boy was "a common meme on the internet and has absolutely no offensive connotations".
Kim Bum will serve for two years just like Lee Min Ho, who will be discharged in May 2019.
They raided his Herefordshire home but the bum was hidden, buried in a field.
The RELIEF trial will assess safety and feasibility of intravenous delivery of "Cytori Cell Therapy" in addition to usual care in patients with thermal bum injuries covering between 20 percent and 50 percent of their body surface area.