Methods and systems for re-ordering commands to access memory

A method for re-ordering commands to access memory via an array controller having sequencers, the method comprising:

• receiving a first command to access a memory bank of the memory;
• determining a penalty associated with the first command based upon a conflict between the first command and an access to the memory bank, the penalty to expire when the memory bank and a data bus associated with the memory bank are available to process the first command;
• queuing the first command;
• and
• dispatching the first command to an available sequencer of the sequencers after the penalty expires, to service the first command.

A system for re-ordering commands, the system comprising:

• a memory having more than one memory bank;
• a memory controller coupled with the memory via a data bus, comprising
• an array controller having sequencers to service the commands;
• a first penalty box to receive a first command of the commands, the first command being associated with a memory bank of the memory, and to determine a penalty associated with the first command based upon a conflict between the first command and an access to the memory bank, the penalty to expire when the memory bank and the data bus are available to process the first command;
• and
• a command queue to store the first command in a queue, update the penalty in response to a communication from the first penalty box and dispatch the first command to an available sequencer of the array controller after the penalty expires, to service the first command;
• and
• a processor coupled with the memory controller to issue the commands to access the memory.