composer update "process killed" -

i tried execute:

composer.phar update 

and received:

fatal error: allowed memory size of 94371840 bytes exhausted (tried allocate 71 bytes) in phar:///home/xxxxxxx/bin/composer.phar/src/composer/dependencyresolver/rulesetgenerator.php on line 123

the xxxxxxx user.

and tried execute:

php -d memory_limit=256m ~/bin/composer.phar update 

and:

php -d memory_limit=512m ~/bin/composer.phar update 

then received this:

yikes! 1 of processes (php, pid 14331) killed excessive resource usage. please contact dreamhost support details.**

how can execute composer update on dreamhost shared host? can had experienced situation me please?

the context: laravel 4

run composer update command on development machine, generates composer.lock file you. upload composer.lock file , on shared host run composer install. use lot less memory!