I have found the source of the memory leak & have to verify the fix.
Henry Rich
On 5/19/2017 7:15 PM, Jose Mario Quintana wrote:
Further testing suggests that the memory leak bug,
]^:0: (;/i.1e6)
is pervasive in the following sense:
It occurs when the verb argument is a boxed list with several items and for
most (any?) verbs u and v in the monadic or dyadic form u^:v ; it
affects J805 and J806, all flavors (JQt, JHS, jconsole), and platforms
(Windows, Linux, etc.).
Beware: if another verb contains u^:v and it is executed repeatedly memory
is consumed and it can potentially freeze a computer; that is what happened
when I was bitten for the first time (I had to pull the plug).
PS. The wicked crash also seems to be widespread.
On Tue, May 16, 2017 at 7:05 PM, Jose Mario Quintana <
[email protected]> wrote:
Thank you
On Tue, May 16, 2017 at 6:48 PM, David Mitchell <[email protected]>
wrote:
It ran in J64-804
On 5/16/2017 18:09, Jose Mario Quintana wrote:
0. Wicked Crash in JQt805/806
Cloak=. ((5!:1)@:<'Cloak')Cloak=. (0:`)(,^:)
'evoke fix amper'=. <@:Cloak "0@:;: '`: f. &'
train=. evoke&6 f.
an=. <@:((,'0') ,&< ])
indet=. '' ($ ,) 128!:5 NB. Is Indeterminate?
eval=. {. train@:, an@:((train :: ])&.>)@:}.
body=. ([ amper >@:{.)@:([ , <@:])`(eval@:}.@:[)@.(indet @:])
GENOME=. <@:fix'body'
vs=. GENOME&body f.
S=. vs ]`'' NB. Strand notation (_. is used as a guard)
S 'this' 'is' 'strand' 'notation' 0 a: (a.{~97+i.10) _.
┌────┬──┬──────┬────────┬─┬──┬──────────┐
│this│is│strand│notation│0│┌┐│abcdefghij│
│ │ │ │ │ ││││ │
│ │ │ │ │ │└┘│ │
└────┴──┴──────┴────────┴─┴──┴──────────┘
S (body f.)`'' _. NB. Nothing is produced...
S NB. ... J805/806 Crashes!
It runs fine in a custom J (Jx804) based on J804. Can anybody
confirm
that it runs in J04 (I do not have one handy)?
assert (,GENOME) -: S (body f.)`'' _.
The problem seems to be related to in-place operations; but, I have
no
idea if it only can occur in wicked contexts or not.
1. Memory leak in JQt805/806
This is one hurdle preventing us from moving an application from
Jx804
to Jx805/Jx806,
]^:0: ;/i.1e6
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