Struct SVMTransactionExecutionCost

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pub struct SVMTransactionExecutionCost {
Show 37 fields pub log_64_units: u64, pub create_program_address_units: u64, pub invoke_units: u64, pub sha256_base_cost: u64, pub sha256_byte_cost: u64, pub log_pubkey_units: u64, pub cpi_bytes_per_unit: u64, pub sysvar_base_cost: u64, pub secp256k1_recover_cost: u64, pub syscall_base_cost: u64, pub curve25519_edwards_validate_point_cost: u64, pub curve25519_edwards_add_cost: u64, pub curve25519_edwards_subtract_cost: u64, pub curve25519_edwards_multiply_cost: u64, pub curve25519_edwards_msm_base_cost: u64, pub curve25519_edwards_msm_incremental_cost: u64, pub curve25519_ristretto_validate_point_cost: u64, pub curve25519_ristretto_add_cost: u64, pub curve25519_ristretto_subtract_cost: u64, pub curve25519_ristretto_multiply_cost: u64, pub curve25519_ristretto_msm_base_cost: u64, pub curve25519_ristretto_msm_incremental_cost: u64, pub heap_cost: u64, pub mem_op_base_cost: u64, pub alt_bn128_addition_cost: u64, pub alt_bn128_multiplication_cost: u64, pub alt_bn128_pairing_one_pair_cost_first: u64, pub alt_bn128_pairing_one_pair_cost_other: u64, pub big_modular_exponentiation_base_cost: u64, pub big_modular_exponentiation_cost_divisor: u64, pub poseidon_cost_coefficient_a: u64, pub poseidon_cost_coefficient_c: u64, pub get_remaining_compute_units_cost: u64, pub alt_bn128_g1_compress: u64, pub alt_bn128_g1_decompress: u64, pub alt_bn128_g2_compress: u64, pub alt_bn128_g2_decompress: u64,
}

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§log_64_units: u64

Number of compute units consumed by a log_u64 call

§create_program_address_units: u64

Number of compute units consumed by a create_program_address call

§invoke_units: u64

Number of compute units consumed by an invoke call (not including the cost incurred by the called program)

§sha256_base_cost: u64

Base number of compute units consumed to call SHA256

§sha256_byte_cost: u64

Incremental number of units consumed by SHA256 (based on bytes)

§log_pubkey_units: u64

Number of compute units consumed by logging a Pubkey

§cpi_bytes_per_unit: u64

Number of account data bytes per compute unit charged during a cross-program invocation

§sysvar_base_cost: u64

Base number of compute units consumed to get a sysvar

§secp256k1_recover_cost: u64

Number of compute units consumed to call secp256k1_recover

§syscall_base_cost: u64

Number of compute units consumed to do a syscall without any work

§curve25519_edwards_validate_point_cost: u64

Number of compute units consumed to validate a curve25519 edwards point

§curve25519_edwards_add_cost: u64

Number of compute units consumed to add two curve25519 edwards points

§curve25519_edwards_subtract_cost: u64

Number of compute units consumed to subtract two curve25519 edwards points

§curve25519_edwards_multiply_cost: u64

Number of compute units consumed to multiply a curve25519 edwards point

§curve25519_edwards_msm_base_cost: u64

Number of compute units consumed for a multiscalar multiplication (msm) of edwards points. The total cost is calculated as msm_base_cost + (length - 1) * msm_incremental_cost.

§curve25519_edwards_msm_incremental_cost: u64

Number of compute units consumed for a multiscalar multiplication (msm) of edwards points. The total cost is calculated as msm_base_cost + (length - 1) * msm_incremental_cost.

§curve25519_ristretto_validate_point_cost: u64

Number of compute units consumed to validate a curve25519 ristretto point

§curve25519_ristretto_add_cost: u64

Number of compute units consumed to add two curve25519 ristretto points

§curve25519_ristretto_subtract_cost: u64

Number of compute units consumed to subtract two curve25519 ristretto points

§curve25519_ristretto_multiply_cost: u64

Number of compute units consumed to multiply a curve25519 ristretto point

§curve25519_ristretto_msm_base_cost: u64

Number of compute units consumed for a multiscalar multiplication (msm) of ristretto points. The total cost is calculated as msm_base_cost + (length - 1) * msm_incremental_cost.

§curve25519_ristretto_msm_incremental_cost: u64

Number of compute units consumed for a multiscalar multiplication (msm) of ristretto points. The total cost is calculated as msm_base_cost + (length - 1) * msm_incremental_cost.

§heap_cost: u64

Number of compute units per additional 32k heap above the default (~.5 us per 32k at 15 units/us rounded up)

§mem_op_base_cost: u64

Memory operation syscall base cost

§alt_bn128_addition_cost: u64

Number of compute units consumed to call alt_bn128_addition

§alt_bn128_multiplication_cost: u64

Number of compute units consumed to call alt_bn128_multiplication.

§alt_bn128_pairing_one_pair_cost_first: u64

Total cost will be alt_bn128_pairing_one_pair_cost_first

  • alt_bn128_pairing_one_pair_cost_other * (num_elems - 1)
§alt_bn128_pairing_one_pair_cost_other: u64§big_modular_exponentiation_base_cost: u64

Big integer modular exponentiation base cost

§big_modular_exponentiation_cost_divisor: u64

Big integer moduler exponentiation cost divisor The modular exponentiation cost is computed as input_length/big_modular_exponentiation_cost_divisor + big_modular_exponentiation_base_cost

§poseidon_cost_coefficient_a: u64

Coefficient a of the quadratic function which determines the number of compute units consumed to call poseidon syscall for a given number of inputs.

§poseidon_cost_coefficient_c: u64

Coefficient c of the quadratic function which determines the number of compute units consumed to call poseidon syscall for a given number of inputs.

§get_remaining_compute_units_cost: u64

Number of compute units consumed for accessing the remaining compute units.

§alt_bn128_g1_compress: u64

Number of compute units consumed to call alt_bn128_g1_compress.

§alt_bn128_g1_decompress: u64

Number of compute units consumed to call alt_bn128_g1_decompress.

§alt_bn128_g2_compress: u64

Number of compute units consumed to call alt_bn128_g2_compress.

§alt_bn128_g2_decompress: u64

Number of compute units consumed to call alt_bn128_g2_decompress.

Implementations§

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impl SVMTransactionExecutionCost

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pub fn poseidon_cost(&self, nr_inputs: u64) -> Option<u64>

Returns cost of the Poseidon hash function for the given number of inputs is determined by the following quadratic function:

61*n^2 + 542

Which aproximates the results of benchmarks of light-posiedon library[0]. These results assume 1 CU per 33 ns. Examples:

  • 1 input
    • light-poseidon benchmark: 18,303 / 33 ≈ 555
    • function: 61*1^2 + 542 = 603
  • 2 inputs
    • light-poseidon benchmark: 25,866 / 33 ≈ 784
    • function: 61*2^2 + 542 = 786
  • 3 inputs
    • light-poseidon benchmark: 37,549 / 33 ≈ 1,138
    • function; 61*3^2 + 542 = 1091

[0] https://github.com/Lightprotocol/light-poseidon#performance

Trait Implementations§

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impl Clone for SVMTransactionExecutionCost

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fn clone(&self) -> SVMTransactionExecutionCost

Returns a duplicate of the value. Read more
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const fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for SVMTransactionExecutionCost

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Default for SVMTransactionExecutionCost

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl PartialEq for SVMTransactionExecutionCost

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fn eq(&self, other: &SVMTransactionExecutionCost) -> bool

Tests for self and other values to be equal, and is used by ==.
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const fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Copy for SVMTransactionExecutionCost

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impl Eq for SVMTransactionExecutionCost

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impl StructuralPartialEq for SVMTransactionExecutionCost

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